David has two containers of two different gases at the same temperature and pressure. David could assume all of following EXCEPT _________.
A. when the temperature is increased, the volume of both containers will increase
B. when the pressure is increased, the volume of both containers will decrease
C. both containers contain the same number of gas particles
D. when the pressure is decreased, the temperature of both containers will increase

Answers

Answer 1

Answer:

David could not assume that:

       when the pressure is decreased, the temperature of both containers will increase (option D).

Explanation:

Since this question has only one answer, you must assume that both containers are identical, i.e. have the same volume.

Using the ideal gas equation pV = nRT you can conclude that pressure and temperature are directly related, i.e. if the pressure is decreased, the temperature will decrease proportionally, which is opposite to the assumption that when the pressure is decreased, the temperature of both containers will increase.

On the other hand, from the same equation, you can tell the relationship between the other variables and conclude that the other choices are valid assumptions:

A. when the temperature is increased, the volume of both containers will increase:

Correct: pV = nRT shows that volume and temperature are directly related: when T increase, V increase)

B. when the pressure is increased, the volume of both containers will decrease

Correct: pV = nRT shows that p and V and inversely related, so when p is incrased, V will decrease.

C. both containers contain the same number of gas particles

Correct, only if the two containers are identical: since the two containers of the two different gases are at the same temperature and pressure, the equation pV = nRT, shows that if the volumes are equal the number of particles are the same.

Answer 2
Final answer:

David cannot assume option C, which states both containers contain the same number of gas particles since he only knows the temperature and pressure of both gases. Without knowledge of the volume, he cannot determine the number of particles via the Ideal Gas Law.

Explanation:

In this question, David does not have enough information to assume that C. both containers contain the same number of gas particles. This is because simply having the same temperature and pressure for two different gases does not confirm they have the same number of particles.

In the units of Ideal Gas Law, which states PV = nRT, 'P' stands for pressure, 'V' is volume, 'n' indicates number of moles i.e., the number of particles, 'R' is the universal gas constant, and 'T' is Temperature.

From this, we can see that the number of gas particles is proportional to the pressure and volume, and inversely proportional to the temperature. Therefore, without information about volume, we can not determine if both containers have the same number of particles.

The other possibilities regarding pressure, temperature, and volume changes are governed by the principles of gas laws, such as Boyle's, Charles', and Gay-Lussac's laws.

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Related Questions

Which is the most likely way an automotive engineer would use chemistry

Answers

The answer is D oooooo

Final answer:

An automotive engineer would most likely use chemistry to design and improve automobile catalytic converters, ensuring efficient combustion and reduced toxic emissions. They also work on reformulating gasoline to meet environmental standards and improve engine performance.

Explanation:

The most likely way an automotive engineer would use chemistry is through the design and development of automobile catalytic converters. Scientists have engineered catalytic converters to significantly reduce the toxic emissions resulting from gasoline burned in internal combustion engines. By implementing a blend of catalytically active metals, these converters facilitate the complete combustion of carbon-containing compounds into carbon dioxide, while also diminishing the output of nitrogen oxides.

Another aspect of chemistry in automotive engineering involves the reformulation of gasoline. Removing substances like tetraethyllead, which hampers exhaust catalysts, and decreasing the presence of highly volatile and unsaturated hydrocarbons are critical to reduce photochemical smog and increase engine efficiency.

14. What are the products of the oxidation of glucose?

Answers

Answer:

carbon dioxide and water

Explanation:

Answer:

carbon dioxide and water

Explanation:

the molecules represent the products of thorough energy extraction

Identify which properties could correspond to solids, plasmas, or both.
maintain a unique shape.
____particles collide infrequently with other particles.
____particles have very high velocities.
____can conduct electricity.
____contain protons.
____typically have a low temperature.
____structure has long-range order.

Answers

Explanation:

Plasma  is defined as the state of matter which is a hot ionized gas that consists of positively charged ions and negatively charged electrons.

Like gases, particles of a plasma are also held by weak forces that are Vander waal forces. And, as it is a hot ionized gas therefore, particles of plasma move rapidly from one place to another.

In a solid, molecules are held together by strong intermolecular forces of attraction. As a result, they are unable to move from their initial place but they can vibrate at their mean position.  

Hence, in solid substances the molecules have low kinetic energy. Also, molecules in a solid are placed in a long range order.

Solids like copper, silver etc able to conduct electricity.

Also, both plasma and solids contain proton because every atom contains neutrons, protons and electrons.

Thus, we identify the properties corresponding to solids, plasmas, or both are as follows.

Solids maintain a unique shape.Plasma particles collide infrequently with other particles.Plasma particles have very high velocities.Both can conduct electricity.Both contain protons.Solids typically have a low temperature.Solids structure has long-range order.

Answer:

Identify which properties could correspond to solids, plasmas, or both.

Solids

maintain a unique shape.

Plasma

particles collide infrequently with other particles.

Plasma

particles have very high velocities.

Both solids and plasmas

can conduct electricity.

Both solids and plasmas

contain protons.

Solids

typically have a low temperature.      

Solid

structure has long-range order.

Explanation:

11) If 352 moles of butane (CH) is mixed with 8.47 moles of oxygen gas, how many grams of water will be produced?
2C,H,0 + 130, 800, + 10 H,0 (balanced)

Answers

Answer:

117 g  

Explanation:

We are given the amounts of two reactants, so this is a limiting reactant problem.

1. We know we will need an equation with masses and molar masses, so let’s gather all the information in one place.  

M_r:       63.55      32.00                    18.02

             2C₄H₁₀  +  13O₂  ⟶ 8CO₂ + 10H₂O

n/mol:     352         8.47

2. Calculate the amount of water that each reactant can produce

(a) From C₄H₁₀

Moles of H₂O = 352 mol C₄H₁₀ × (10 mol H₂O/2 mol C₄H₁₀) = 704 mol H₂O

(b) From O₂:

Moles of H₂O = 8.47 mol O₂ × (10 mol H₂O/13 mol O₂) = 6.515 mol H₂O

3. Identify the limiting reactant

The limiting reactant is O₂, because it gives fewer moles of H₂O.

4. Calculate the mass of water

Mass of H₂ = 5.515 mol H₂O × (18.02 g H₂)/(1 mol H₂O) = 117 g H₂O

The reaction produces 117 g H₂O.

Think about how you can use Le Chatelier’s principle to find possible solutions to the design problem. Describe at least two ways to increase the yield (amount) of ammonia based on this principle.

Answers

Answer:

1) Increasing the pressure.

2) Adding hydrogen gas.

Explanation:

Le Châtelier's principle states that when there is an dynamic equilibrium, and this equilibrium is disturbed by an external factor, the equilibrium will be shifted in the direction that can cancel the effect of the external factor to reattain the equilibrium.

For the reaction N₂(g) + 3H₂(g) ⇌ 2NH₃(g):

1) Increasing the pressure:

When there is an increase in pressure, the equilibrium will shift towards the side with fewer moles of gas of the reaction. And when there is a decrease in pressure, the equilibrium will shift towards the side with more moles of gas of the reaction.The reactants side (left) has 4.0 moles of gases and the products side (right) has 2.0 moles of gases.

So, increasing the pressure will shift the reaction to the side with lower moles of gas (right side) that increase the yield (amount) of ammonia.

2) Adding hydrogen gas:

Adding hydrogen gas will increase the concentration of the reactants side, so the reaction will be shifted to the right side to suppress the increase in the concentration of hydrogen gas by addition that increase the yield (amount) of ammonia.

Answer:

The La Chatelier's principle suggests that changes in the products of the design, we can increase the pressure of the equilibrium when we do this it will shift towards the side with fewer moles of gas of the reaction, and when there is a decrease in pressure, the equilibrium will shift towards the side with more moles of gas of the reaction. 

Then we can also add hydrogen gas, by doing this it will increase the concentration of the reactants side, so the reaction will be shifted to the right side to suppress the increase in the concentration of hydrogen gas by addition that increase the yield of ammonia.

Explanation:

Odd one out:
a) CH3COOH
c) CuSO4
b) NaOH
d) H2SO,​

Answers

Probably A, since it’s the only covalent compound. The rest are ionic compounds.

what is the primary purpose of a rate law​

Answers

Answer:

The rate law or rate equation for a chemical reaction is an equation that links the reaction rate with the concentrations or pressures of the reactants and constant parameters. For many reactions the rate is given by a power law such as.

Explanation:

The other person Goggled it. So, pick me as Brainliest.

The primary purpose of a rate law is to provide a mathematical framework that links the rate of a chemical reaction to the concentration of its reactants.

The primary purpose of a rate law is to provide a mathematical expression that describes the relationship between the rate of a chemical reaction and the concentration of its reactants. Through rate laws, scientists can calculate expected yields, determine optimum conditions for economic chemical processes, and understand the course of individual reactions. The derivation of rate laws is essential as they are not directly obtained from chemical equations for ordinary reactions but rather determined from experimental data involving the measurement of concentrations over time.

To ascertain a rate law, the method of initial rates is commonly employed. This involves conducting experiments under varying reactant concentrations and measuring the reaction rates to deduce the reaction order and rate constant. These parameters are indispensable for formulating a rate law, which in turn allows for the calculation of reaction rates under different conditions and aids in the identification of the reaction mechanism.

what is the wavelength of a wave with a velocity of 50 m/s and a frequency of 5Hz
A 250 m
B 0.1 m
C 10m
D 0.01 m

Answers

Answer:

C. 10 m

Explanation:

The speed of a wave v = λf where λ is the wavelength and f the frequency of the wave.

Making λ the subject of the formula we get

λ= v/f  

f= 5 Hz

v= 50 m/s

λ= 50 m/s÷ 5 Hz

=10 meters

Answer:

C. 10 Meters

Explanation:

A P E X

an
What happens to a molecule of liquid water when hydrogen bonds between atoms are broken?
O The liquid turns to a gas.

The liquid turns to a solid.

The liquid gains hydrogen atoms.

The liquid does not otherwise change.​

Answers

I think it is c but I’m not sure

Answer:

Your Answer is A: The Liquid turns to gas

Explanation:

To break hydrogen bonds you must add heat. When you add heat to water it turns into a gas. So therefore your answer is The Liquid Turns To A Gas.

What is the result of multiplying (2.5 × 1010) × (2.0 × 10-7)?
A. 5.0 × 103
B. 5.0 × 10-3
C. 5.0 × 1017
D. 5.0 × 10-17

Answers

That would be A.

2.5*2*10^(10-7)=5*10^3

Answer: The correct option is,

A. [tex]5.0\times 10^3[/tex]

Explanation:

Given expression,

[tex](2.5\times 10^{10})\times (2.0\times 10^{-7})[/tex]

[tex]=2.5\times 2.0\times 10^{10-7}[/tex]

( By using product property of exponent i.e. [tex]a^m\times a^n = a^{m+n}[/tex] )

[tex]=5.0\times 10^3[/tex]

Therefore,

OPTION A is correct.

NEED ANSWER ASAP According to Ohm’s law, resistance is equal to voltage divided by

current.

conduction.

potential.

time.

Answers

Answer:

A

Explanation:

Ohm's law is stated as E = current * resistance (E = I * R)

When you rearrange the formula, you get R = E/I

The answer is current -- A

Answer:

a

Explanation:

Which of the following is a testable hypothesis?

A. If I brush my teeth, I will get fewer cavities than if I don't brush my
teeth.

B. Green toothpaste tastes better than blue toothpaste or red
toothpaste.

C. Smart, careful, healthy people always brush their teeth.

D. It's wrong to not brush your teeth before you have an important
conversation with someone.

Answers


A. If you brush your teeth you will have less cavities

Answer:

If I brush my teeth, I will get fewer cavities than if I don't brush my teeth.

Explanation:

apex

Calculate number of CO2 molecules in 0.250 mol of co2

Answers

Carbon's molar mass is 12gm

Oxygen's molar mass is 16gm

So CO2 molar mass is 44gm

Hence 1mol of CO2 contains 44gm
There 1/4mol of CO2 contains 44/4=11gm.

Hope it helps

This calculation yields 1.506 × 10²³ molecules of CO₂.

Calculating the Number of CO₂ Molecules in 0.250 mol of CO₂

To determine the number of CO₂ molecules in 0.250 mol of CO₂, we can use Avogadro's number, which is the number of particles (atoms, molecules, ions, etc.) in one mole of a substance.

Step-by-Step Explanation:

Avogadro's number is 6.022 × 10²³ molecules/mol.

We are given 0.250 mol of CO₂.

Multiply the number of moles by Avogadro's number to find the number of molecules:

Calculation:

0.250 mol × 6.022 × 10²³ molecules/mol

= 1.506 × 10²³ molecules

Therefore, there are 1.506 × 10²³ molecules of CO₂ in 0.250 mol of CO₂.

what are the 4 phases of matter in order of increasing engery content?

Answers

Answer:

plasma,gas, liquid, solid

Explanation:

Plasmas are hotter than gases and so have more kinetic energy, next is gas, then liquid and finally a solid.

Answer:

the four phrase are plasma, liquid , gas , and solid

Explanation:

The diag
in dilute
Page 6 of 12
A6
A5
(a)
Fluorine, chlorine, bromine and iodine are placed in the same Group of the
Periodic Table.

State the common name used to describe elements in this Group.
(i)
State the Group in which the elements are placed and explain why
they are placed in that Group.
(ii)
Which of the above named elements is a solid at room
temperature and pressure?​

Answers

Answer:

Here's what I get.

Explanation:

(a) F, Cl, Br, and I are called halogens (salt formers)

(i) They are placed in Group 17, the Group just before Group 18 (the noble gases), because they need just one more valence electron to get a noble gas electron configuration.

(ii) At room temperature, iodine is a lustrous, purple-black solid that melts to form a deep violet liquid at 114 °C.

If a greyhound can run with an average velocity of 60 km/h, how far can it
travel in 30 seconds?

Answers

Answer: 0.5 klms

Explanation:

Hope it helped :))

Which one of the following is a decomposition reaction?
O A. N2 (9) + 3H2 (9) - 2NH3 (9)
O B. 4Fe (s) + 302 (9) - 2Fe203 (s)
O C. 2LIOH (s) + CO2 (g) - Li2CO3 (s) + H20 ()
O D. K2CO3 (s) - K20 (s) + CO2 (g)

Answers

Answer:

d

Explanation:

the answer because decomposition means breaking down or taking apart

Answer:

l

Explanation:

6. Which of the following statements correctly describes what happens to the diaphragm during an
inhalation, when the lungs inflate?
O A. The diaphragm returns to its resting state.
O B. The diaphragm contracts and flattens.
O C. The diaphragm only moves during exhale.
O D. The diaphragm expands.

Answers

Answer is B.

As the diaphragm contracts and flattens, it increases the volume of the thorax where the lungs are located. This results in a decrease in pressure (Boyle’s Law, if you know it) that creates a pressure gradient from outside to inside. This is what causes air to move into the lungs.

Answer:

O B. The diaphragm contracts and flattens.

Explanation:

The diaphragm is a skeletal striated muscle that separates the abdominal cavity from the thoracic cavity, has a dome shape and plays a key role in breathing.  Locate near the lumbar vertebrae, the lower ribs and the sternum and can be divided according to its location into three parts: sternal, costal and lumbar.

During inhalation, the diaphragm contracts and flattens, reducing the pressure inside the chest and compressing the viscera of the abdomen, which facilitates the entry of air into the lungs.

At the expiration, the inverse process occurs: it relaxes and rises, increasing the pressure inside the chest and expelling air from the lungs.

A substance added in The final stages to remove sulphur from coal is

Answers

Final answer:

A substance used to remove Sulphur from coal is a desulfurizing agent, commonly a limestone slurry. It chemically reacts with the Sulphur emissions, creating less harmful substances like Gypsum.

Explanation:

A substance used in the final stages to remove Sulphur from coal is called a desulfurizing agent or a scrubber. One technique includes the use of a limestone slurry, which reacts chemically with the sulphur emissions and converts them into less harmful substances, such as gypsum. Gypsum, or calcium sulfate, is a beneficial byproduct because it can be used in the manufacture of wallboard and other building materials. Thus, the process not only removes pollutants like sulfur from the coal but also creates a valuable byproduct.

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Which of the following hydrocarbons will most likely be found around cows? A. ethane B. methane C. octane D. decane

Answers

Answer:B

Explanation:I know for a fact Its B

Answer:

Methane

Choice B is correct

Explanation:

Methane is a key byproduct of the bacterial breakdown in the gut.

Therefore, Methane is most likely to be found around cows

The combustion of methane, CH4, releases 890.4
kJ/mol. That is, when one mole of methane is burned,
890.4 kJ are given off to the surroundings. This means
that the products have 890.4 kJ less than the reactants.
Thus, AH for the reaction = - 890.4 kJ. A negative symbol
forAH indicates an exothermic reaction.
CH (g) + 20 (g)> CO2 (g) + 2 H0 (1); AH = - 890.4 kg
a) How much energy is given off when 2.00 mol of CH,
are burned?
b) How much energy is released when 22.4g of CH. are
burned?​

Answers

Answer:

[tex]\boxed{\text{a) 1.78 MJ; b) 1.25 MJ}}[/tex]

Explanation:

[tex]\rm CH$_4$ + 2O$_2 \longrightarrow \,$ CO$_2$ + 2H$_2$O; \Delta H = - 890.4 \text{ kJ}$\cdot$\text{mol}$^{-1}$[/tex]

a) Energy from 1 mol

[tex]\Delta_{\text{c}}H^{\circ} = \text{2.00 mol} \times \dfrac{\text{-890.4 kJ}}{\text{1 mol}}=\text{-1780 kJ} = \textbf{-1.78 MJ}\\\\\text{The reaction gives off } \boxed{\textbf{1.78 MJ}}[/tex]

b) Energy from 22.4 g

(i) Convert grams to moles

[tex]n = \text{22.4 g } \times \dfrac{\text{1 mol }}{\text{16.04 g}} = \text{1.399 mol}[/tex]

(ii) Convert moles to energy

[tex]\Delta_{\text{c}}H^{\circ} = \text{1.399 mol} \times \dfrac{\text{-890.4 kJ}}{\text{1 mol}}=\text{-1250 kJ} = \textbf{-1.25 MJ}\\\\\text{The reaction releases } \boxed{\textbf{1.25 MJ}}[/tex]

Match the name of the following compound: 
MgSO4 · H2O

Magnesium sulfate monohydrate

Magnesium (II) sulfate monohydrate

Magnesium (II) sulfate hydrate

Magnesium sulfate hydrate

Answers

Answer:

number 2 is the answer my friend said

Explanation:

Answer:

Magnesium sulfate monohydrate

Explanation:

The compound is a salt, we have a metal connected to an ion.

To name a salt, first of all, we put the name of the cation, which is the first elemental in the compound. It is followed by the name of the anion.

In this case, the cation is the Magnesium and the anion is the anion sulfate. When the cation can have more than one oxidation number, we need to put this number in parenthesis, like this:

Iron (II) sulfate (FeSO4)

Iron (III) sulfate (Fe2(SO4)3)

However, magnesium can only have 2 as oxidation number, because it's from family 2 in the periodic table. So it's unnecessary to put this information.

As the salt has water in its structure, it's a hydrated salt, and this information needed to be in its name. Because it has only one molecule of water, we put the name monohydrate.

Having food in the stomach __________ the rate at which a person's BAL rises.

Answers

Answer:

Explanation:

It rises Food in your stomach (Food slows down alcohol absorption. What's the best to eat? Protein! It takes the longest to digest)

It will slow down the rate at which a person's BAL rises.

19 grams of sodium and 34 grams of chlorine are measured out and put into separate glass vials that weigh 10 grams each. Then sodium is dumped into the glass vial containing the chlorine. They react and form a crystalline solid. What is the total weight of the glass vial containing the final product?

Answers

Answer:

63.02 g.

Explanation:

Na reacts with Cl₂ according to the balanced equation:

2Na + Cl₂ → 2NaCl,

It is clear that 2 mole of Na react with 1 mole of Cl₂ to  produce 2 moles of NaCl.

Firstly, we need to calculate the no. of moles of Na and Cl₂:

no. of moles of Na = (mass/atomic mass) = (19.0 g/22.9897 g/mol) = 0.826 g.

no. of moles of Cl₂ = (mass/atomic mass) = (34.0 g/70.906 g/mol) = 0.48 g.

From the stichiometry, Na reacts with Cl₂ with a molar ratio (2:1).

So, 0.826 mol of Na "the limiting reactant" reacts completely with 0.413 mol of Cl₂ "left over reactant".

The no. of moles of Cl₂ remained after the reaction = 0.48 mol - 0.413 mol = 0.067 mol.

∴ The mass of Cl₂ remained after the reaction = (no. of moles of Cl₂ remained after the reaction)(molar mass of Cl₂) = (0.067 mol)(70.906 g/mol) = 4.75 g.

To get the no. of grams of produced NaCl:

using cross multiplication:

2 mol of Na produce  → 2 mol of NaCl, from the stichiometry.

∴ 0.826 mol of Na produce  → 0.826 mol of NaCl.

∴ The mass of NaCl produced after the reaction = (no. of moles of NaCl)(molar mass of NaCl) = (0.826 mol)(58.44 g/mol) = 48.27 g.

∴ The total weight of the glass vial containing the final product = the weight of the glass vial + the weight of the remaining Cl₂ + the weight of the produced NaCl = 10.0 g + 4.75 g + 48.27 g = 63.02 g.

Answer:

63g

Explanation:

You don't have to make a lot of calculus to find the answer.

Just only remember the principle of the matter who says

"The matter is not created or destroyed only transformed"

It means, that even when you are transforming sodium and chlorine to obtain sodium chlorine, who is the crystalline solid, you can't obtain more matters (grams) that you put at the beginning of the experiment.

As well, you just have to add the grams of the sodium, chlorine and the recipient, glass vial containing the final product, as follow:

19 grams of sodium + 34 grams of chlorine + 10 grams glass vial

19 + 34 + 10 = 29 + 34 = 63 g

remember, the matter isn't create, just transformed, so, you can't add any more grams that you already have.

12.
Which of these would you expect to be soluble in the nonpolar solvent hexane, C6H14?
A H2O
B. CH,
C Naci
D Sns,

Answers

Answer:

B. CH₄

Explanation:

The primary rule in deciding solubilities is, Like dissolves like. That is,

A polar solute dissolves in a polar solvent. A nonpolar solute dissolves in a nonpolar solvent.

C₆H₁₄ is a nonpolar solvent. Its strongest intermolecular forces are London dispersion forces.

CH₄ is a nonpolar solute. It contains only nonpolar C-H bonds, and its strongest intermolecular forces are London dispersion forces.

Molecules of the two compounds can easily intermingle with each other because the attractive forces between them are so small.

A is wrong. H₂O is a highly polar substance. Its molecules are so strongly attracted to each other that they will not dissolve in the C₆H₁₄.

C and D are wrong. Both NaCl and SnS are compounds of a metal and a nonmetal. We would predict them to be ionic solids, at the extreme end of polarity. They  will not dissolve in C₆H₁₄.

Final answer:

In the nonpolar solvent hexane, CH4 (methane) would be expected to be soluble based on the principle of 'like dissolves like'. Other given substances like H2O, NaCl and SnS2 will not dissolve well in hexane due to their polar ionic and network covalent nature respectively.

Explanation:

Among the options given, the substance that would be expected to be soluble in the nonpolar solvent hexane (C6H14) is B. CH4 (methane). This is based on the principle of like dissolves like. Nonpolar solvents, like hexane dissolve nonpolar substances. Methane is a nonpolar substance and will therefore dissolve in hexane. Conversely, H2O (water) and NaCl (table salt) are polar and ionic compounds respectively and SnS2 is a network covalent compound so they will not dissolve well in a nonpolar solvent like hexane.

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Is so2 a formula unit

Answers

Answer:

The molecular formula for Sulfur Dioxide is SO2. The SI base unit for amount of substance is the mole. 1 mole is equal to 1 moles Sulfur Dioxide, or 64.0638 grams.

So yes it is a unit

Explanation:

Sorry don’t know what it is

An acid is a substance that donates protons.

true or false please answer asap!!!

Answers

Answer:

The correct answer is True.

Explanation:

An acid is a molecule that has the property of donating a proton or accepting a pair of electrons during a reaction.

The strength of an acid is related to their tendency to lose a proton. A strong acid is one that separates all its components when it comes into contact with water.

As its composition includes hydrogen ions, the more its concentration, the higher the acidity will be, and the lower the pH of the solution.

Its main characteristic is that on contact with water they produce a sour taste.

An acid is a substance that donates protons. Therefore, this given statement is very true.

Acid is any material that when dissolved in water has a sour taste, alters the colour of some indicators (blue litmus paper turns red, for example), combines with some metals (like iron) to release hydrogen, reacts chemically bases to produce salts, and catalyses various chemical reactions. Acids are examples of both organic chemicals that belong to the acid group, carboxylic acid, sulfonic acids, or phenol groups as well as the inorganic substances that comprise the mineral acids, such as sulfuric, nitric, hydrochloric, etc phosphoric acids. An acid is a substance that donates protons. Therefore, this given statement is very true.

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2H2O2 → 2H2O + O2 synthesis decomposition combustion

Answers

Answer:

Decomposition

Explanation:

The equation 2 H₂O₂ → 2 H₂O + O₂ is an example of a decomposition reaction. During decomposition, a compound breaks down into two or more       products under the favorable conditions, without combining with other reagents.

However, the reaction can be catalyzed using a suitable catalyst.  

Leslie wants to know which advertising medium works best to promote her electronics store. She surveys her customers over a weekend and creates a bar graph.



Based on her survey, which advertising mediums will work best to publicize Leslie’s in-store specials?

newspaper and printed flyers
radio and TV
radio and Internet
printed flyers and Internet

Answers

answer: radio and tv

Which of the following represents the ester functional group?

A. -COO-
B. -CHO
C. -COOH
D. C=O

Answers

Answer:

D. C=O

Explanation:

Esters are formed by the condensation of alcohols and acids with minus water. During the reaction, at least one -OH group is replaced by an O- alkyl group. The resulting compound is an ester and has a characteristic fruity smell. Its functional group is C=O

Answer: A. -COO-

Explanation:

Functional groups are specific group of atoms within molecules that are responsible for the characteristic chemical reactions of those molecules.

A. Esters have functional group [tex]-O=C-OR[/tex].

Example: methyl ethanoate with molecular formula [tex]CH_3COOCH_3[/tex]

B. Aledydes have functional group [tex]-O=CH[/tex].

Example: Ethanal with molecular formula [tex]CH_3CHO[/tex]

C. Acids have functional group [tex]-O=C-OH[/tex].

Example: Ethanoic acid with molecular formula [tex]CH_3COOH[/tex]

D. Ketones have functional group [tex]-C=O[/tex].

Example: Propanone with molecular formula [tex]CH_3COCH_3[/tex]

Other Questions
What is the function of the epiglottis? Which functions are even? Check all of the boxes that apply.f(x) = x4 x?f(x) = x2 3x + 2f(x) = (x - 2)f(x) = xDONE The Federal Deposit Insurance Corporation A. is part of the Federal Reserve System. B. has become insolvent in recent years due to a large number of bank failures. C. in practice has seldom been of much use. D. protects depositors in the event of bank failures. Two point charges of +2.0 C and -6.0 C are located on the x-axis at x = -1.0 cm and x = +2.0 cm respectively. Where should a third charge of +3.0-C be placed on the +x-axis so that the potential at the origin is equal to zero? (k = 1/40 = 8.99 109 N m2/C2) Use a Venn diagram to answer the question. A survey of 180 families showed that 67 had a dog; 52 had a cat; 22 had a dog and a cat; 70 had neither a cat nor a dog, and in addition did not have a parakeet; 4 had a cat, a dog, and a parakeet. How many had a parakeet only? How does the allegory in The Alchemist develop the theme that all beings are connected? A.) In a surprising twist, Santiago learns that his treasure was located in Spainnot under the pyramids. B.) Santiago learns to communicate with many people in the desert without words.C.) The boy dreams that two hawks battle one another and learns the power of omens.D.) In the desert, the boy learns from the Englishmans books about alchemy and the Philosophers Stone. Approximately what percentage of Earths water is fresh water? a. 97 percent b. 71 percent c. 30 percent d. 3 percent PLEASE HELP ASAP 35 PTS + BRAINLIEST TO RIGHT/BEST ANSWER. Im pretty sure its b or d, but cant figure out which; please only answer if youre positive! If AY and X || Y, then _____ Solve the system of equations by finding the reduced row-echelon form of the augmented matrix for the system of equations. 9x-4y+z=-4. -x+2y-3z=20. 4x+4y-z=43 Calculate the molarity of the solution.6.02 x 1022 molecules of HCI (molecular weight = 36.5 g/mole) in 2.0 liters of waterM The industry that did the most to boost other industries in the 1920s wasa.aviation.b.oil refining.c.automobile making.d.steel production. the average number of cars that pass through an intersection is 45 cars every minute. what is the rate of cars passing through in a day? Based on the information in the graph, what can you conclude about humans in the world in general? Mrs. Finn and the other 2nd grade teachers meet every Thursday morning to discuss issues and upcoming events. Mrs. Finn is in charge of the Science Fair and is preparing some information to hand out to her teammates at this week's meeting. Mrs. Hawkins, another teacher on Mrs. Finn's team, stops in to Mrs. Finn's room on Tuesday afternoon to tell her the team meeting for this week needs to be rescheduled for Wednesday morning. Mrs. Hawkins has already told all the other teachers. Mrs. Finn feels frustrated by the change and spends all of Tuesday evening preparing her presentation about the Science Fair instead of following her original plan of grading her class' math tests. Which rule of teamwork has not been exhibited in this situation? An exam was given to a group of freshman and sophomore students. The results are below: Freshman: 106 got As, 130 got Bs, and 149 got Cs. Sophomore: 192 got As, 118 got Bs, and 168 got Cs. If one student is chosen at random from those who took the exam, find the probability that: a) the student was a sophomore. round to 4 decimal places as needed. Which of the following variables is not considered to be a fundamental way of changing the rate of a chemical reaction?a.Temperatureb.Surface Areac.Concentrationd.Catalyste.TimeQuite certain the answer is Time but I need a second opinion. What are connections between Beowulf and Anglo-Saxon culture? 15 points!!! describe the characteristics of a molecule of ammonia (NH3). the lewis structure and table of electronegative are given. the bond polarities are BLANK, the molecular shape is BLANK 2, and the molecule is BLANK 3.blank 1 options: nonpolar, polar blank 2 options: bent, linear, tetrahedral, trigonometry planar, trigonal pyramidal. Blank 3 options: nonpolar, polar each blank has one option. By age 2, the average youngster in the u.s. weighs around _______ pounds and is close to ________ tall. Steam Workshop Downloader