What are the coefficients for the reaction _C12O5 + _H20 - _HCIO3 once it is balanced?
O 1, 1, 1
1, 1, 2
O 1, 2, 2
2, 1, 1

Answers

Answer 1

Answer:

b) 1,1,2

Explanation:

Cl2O5 + H2O  →  2 HClO3

                   2 - Cl - 2

                   6 - O - 6

                   2 - H - 2

by semireactions, the chloride ion (Cl) is balanced with HClO3 and the oxygen is balanced with water:

Cl2O5 + H2O → 2 HClO3


Related Questions

2. Convert 5.3 x 1025 molecules of CO2 to moles.

Answers

Answer:

88.04moles

Explanation:

Nᴀ=6.02×10²³ (constant)

n=N/Nᴀ=

[tex] = \frac{ {5.3 \times 10}^{25} }{ {6.02 \times 10}^{23} } = 88.04moles[/tex]

Final answer:

We can convert the number of molecules to moles by dividing the number of molecules by Avogadro's number. In this case, 5.3 x 10²⁵ molecules of CO₂ is approximately equal to 88.04 moles.

Explanation:

To solve the student's problem, we need to find the number of moles in 5.3 x 10²⁵ molecules of CO₂. We do this by dividing the number of molecules by Avogadro's number (approximately 6.02 x 10²³ mol-1), a constant which tells us the number of molecules in a mole.

So, the calculation is as follows:

Number of Moles = (Number of molecules) / (Avogadro's number)

Which in this case becomes: Number of Moles = (5.3 x 10²⁵ molecules) / (6.02 x 10²³ mol⁻¹) ≈ 88.04 moles

So, 5.3 x 10^25 molecules of CO₂ is approximately equal to 88.04 moles.

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compare and contrast foliation and exfoliation

Answers

Foliation:

The formation of leaf or the leaves are known as the foliation. Foliation is the repetition of the metamorphic rocks. Every layer is like thin sheet of paper which a metre thickness. It is a sheet like planar structure. Foliation  is constructive process

exfoliation :

Exfoliation is the removal off the bone, rock or can say minerals.And when it comes to exfoliation it is the removal of the outer layer may be due to some mechanical or chemical means. The exfoliation  is destructive process.

Calculate the formula unit mass of NaHCO3. (At. Mass of Na=23u, H=1u, C=12u, O=16u)

Answers

Answer:

Formula unit mass of [tex]NaHCO_{3}[/tex] is 84 u.

Explanation:

Formula unit mass can be calculated by the adding individual element mass in the formula of the compound.

The given compound - [tex]NaHCO_{3}[/tex]

From the given the atomic mass of each element in the given compound is as follows.

Atomic mass of sodium (Na) = 23 u

Atomic mass of Hydrogen (H) = 1 u

Atomic mass of carbon (c) = 12 u

Atomic mass of oxygen (O) = 16 u

The number of atoms in the formula:

1 sodium atom =23 u

1 hydrogen atom = 1 u

1 carbon atom =  12 u

3 oxygen atom = 3 X 16 u = 48 u

_____________________________

Formula mass = 84 u

_______________________________

Therefore, Formula unit mass of [tex]NaHCO_{3}[/tex] is 84 u.

What mass of Neon gas is needed to occupy 2.56 L tube at STP?

Answers

Answer:

Mass = 2.222 g

Explanation:

Given data:

Volume of  neon gas = 2.56 L

Temperature = 273 K

Pressure = 1 atm

Mass of neon gas = ?

Solution:

PV = nRT

n = PV / RT

n = 1 atm × 2.56 L/ 0.0821 atm. L / mol. K× 273 K

n = 2.56 L.atm / 22.4 atm. L/ mol

n = 0.11 mol

Mass = number of moles × molar mass

Mass = 0.11 mol × 20.2 g/mol

Mass = 2.222 g

They are solids liquids or gases room temperature. Is that metals or non metal

Answers

Answer:

Mercury is the only metal that's liquid at room temperature, bromine and iodine are the other

Explanation:

11 elements are gases

Others are solid

Answer:

Explanation:

the question is a bit confusing, but if i'm understanding correctly the answer is non-metals... some non-metals are gasses (all of the noble gasses), some are liquid (mercury and bromine), and some are solids (all the rest).

however, not all metals are solid at room temp, there are a few exceptions.

which group in the periodic table has most active metal and why?

Answers

Answer:

the most reactive element in the periodic table are alkali metals (metals of the first group in the periodic table). They have one electron in the last energy level and easily react, they easily release the electron.

Explanation:

_____, a forth state, occurs at very high temperatures, is not very common on earth, but is the common of matter in the universe.

Answers

Answer:

Plasma.

Explanation:

Plasma

" The ionized gaseous mixture consist of atoms, ions and electrons is called plasma"

The plasma was first time identified by William Crookes in 1879. More than 99% universe matter is consist of plasma.

It is the fourth state of matter, the other three are solid, gas and liquid. The most of matter in the universe is plasma. When heat is supplied to the atoms, they gain energy the electrons in atom thus escape from the atom by gaining the energy and create the positive charge. Thus ions are formed. When heat is constantly supplied, the ionization process continue to take place and produce large number of positive charges, free electrons but some atoms not get ionized and remain neutral. Thus a cloud of free electrons , positive charge and neutral atoms is formed which is called plasma.

Examples:

The shining stars, lightning bolts, fluorescent light, flames, electrical current which passes through neon gas are some examples of plasma.

3 Classify the following into elements , compounds and mixtures.
) Gold: __________________
b) Salt solution : ______________
c) Bronze: ___________
d) Calcium carbonate:________________
e) Hydrogen: ____________
f) Soil:_____________

Answers

gold:element

salt solution: mixture

bronze: compound

calcium carbonate: compound

hydrogen: element

soil: mixture

how many atoms are in the 1.5 moles of tin atoms?

2.5x10^24 atoms

7.5x10^1 atoms

9.0x10^23 atoms

1.7x10^23 atoms

Answers

Answer:

option C = 9.0 x 10²³ atoms

Explanation:

Data Given:

no. of moles of tin (Sn) atoms = 1.5 moles

no. of tin (Sn) atoms = ?

Solution:

Formula used to find number of atoms

                  no. of moles = no. of atoms / Avogadro's number

Rearrange the above equation:

          no. of atoms =   no. of moles x Avogadro's number . . . . . . (1)

Where

Avogadro's number = 6.022 x 10²³

Put values in equation 1

           no. of atoms = 1.5 x 6.022 x 10²³

           no. of atoms = 9.033 x 10²³

Round the figure = 9.0 x 10²³ atoms

So option C is correct

-2(bx-5)=16 slove for b

Answers

Explanation:

SADMEP

-2(bx-5) = 16 distribute

-2bx +10 = 16 subtracte

-10 -10

-2bx = 6

divide by -2x (on both sides)

b = -3x

Answer:

b= -3/x

Explanation:

To solve for b in the equation

-2(bx-5)=16

multiply the terms in the bracket by -2

-2bx + 10 = 16

subtract 10 from both sides of the equation

-2bx + 10 - 10 = 16 -10

-2bx = 6

divide both sides of the equation by -2x

-2bx/-2x = 6/-2x

b = -3/x

1.
When a basketball player jumps to make a shot, _____.


the force with which he jumps is equal to the force with which he shoots the ball

the downward force on the floor is equal to the upward force on his feet

the forces on the player’s feet and on the floor are both in the upward direction

the action-reaction forces are unequal because they act on different objects

Answers

Answer:

When a basketball player jumps to make a shot, _____

The downward force on the floor is equal to the upward force on his feet

Explanation:

According to Newton's Third Law of motion :

For every action there is equal and opposite reaction .

Hence when the  basketball player jumps to make a shot, The gravity (downward force) and his energy (upward force on his feet) exert equal forces on each other in opposite directions.

magnetic striping is evidence of

Answers

Magnetic striping is evidence of seafloor spreading.

Answer:

sea floor spreading

Explanation: hfhgg

anthony is interested in seeing the atoms in a piece of fish scale. he breaks the scale into the smallest piece he can, and look at it under a microscope. is he able to see the atoms of the fish scale?
A. No, there are no atoms in a fish scale.
B. No, atoms are too small to see with a microscope.
C. Yes, if he breaks up the fish scale small enough.
D. Yes, atoms are easily seen with a microscope, even the scale is whole.

Answers

B.

you need a very special microscope to see atoms and there are few in the world

Anthony is interested in seeing the atoms in a piece of fish scale. he breaks the scale into the smallest piece he can, and look at it under a microscope. No, atoms are too small to see with a microscope. Therefore, option B is correct.

What is microscope ?

A laboratory tool called a microscope is used to look at things that are too small to be seen with the human eye. The study of small objects and structures under a microscope is known as microscopy. Being microscopic means being difficult to see without a microscope.

Microscopy is the process of looking through a microscope at small objects that are invisible to the unassisted eye. Optical microscopy, scanning probe microscopy, and electron microscopy are the three basic categories. Optical microscopes enlarge the image by reflecting light off of the object and using lenses or mirrors.

Although advancements in imaging have allowed their usage to spread into most fields of science and technology, microscopes remain a mainstay in research in the life sciences.

Thus, option B is correct.

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How does the circulatory system help our cells

Answers

The system is connected to all of your body's cells so that it can transport oxygen efficiently. When you breathe, the circulatory system carries oxygen to your cells and carries dissolved carbon dioxide back to the lungs. ... Hormones created by your endocrine system are sent through the body by the circulatory system.

How many atoms in 14.5 moles of gold?

Answers

Answer:

87.29×10²³ atoms

Explanation:

Nᴀ=6.02×10²³ (constant)

N=n×Nᴀ=14.5×6.02×10²³=87.29×10²³

calculate the mass of 6.45 x 10^22 atoms of carbon​

Answers

The mass of 6.45 x 10²² atoms of carbon​ is 12.864 grams

To calculate the mass of 6.45 x 10²² atoms of carbon, divide the number of atoms by Avogadro's number to get the number of moles, then multiply by the molar mass of carbon (12.011 g/mol) to find the mass in grams.

To calculate the mass of 6.45 x 10²² atoms of carbon, we will use Avogadro's number and the molar mass of carbon. Avogadro's number is 6.022 x 10²³ particles/mol, and the molar mass of carbon is 12.011 g/mol. We use these constants as conversion factors.

First, find the number of moles of carbon atoms:

Number of moles = (6.45 x 10²² atoms C) / (6.022 x 10²³ atoms/mol)

Number of moles = 1.071mol

The next step will be to convert these moles to grams using the molar mass of carbon:

Mass of carbon = Number of moles x Molar mass of carbon

Mass of carbon = 1.071 mol x 12.011 g/mol

Make the calculation and the result will give you the mass in 12.864 grams.

What is the Law of conservation In Chemistry

Answers

The Law of Conservation of Energy states that The total energy of an isolated system is constant. Energy can neither be created nor destroyed. It can only be transformed from one form to another or transferred from one system to another.

1) Hydrogen and oxygen react to form water.


A) Write the complete balanced equation.

B) If 11 moles of hydrogen react with 11 moles of oxygen which of these is the limiting reagent? Show work or explain how you know.

C) What is the maximum amount of water (in grams) that can be produced given 11 moles of hydrogen and 11 moles of oxygen? Show work.


2) Sodium reacts with oxygen to produce sodium oxide as described by the balanced equation below. If 34.6g of sodium reacts with excess oxygen gas to produce 41.8g of sodium oxide, what is the percent yield? Show all work. (hint: be sure to calculate theoretical yield first)


4Na + O2 --> 2Na2O

Answers

Answer:

1)

A) The balanced equation is (1):

(1) [tex]2H_2 +O_2[/tex] ⇒ [tex]2H_2O[/tex]

B) The limiting reagent is the Hydrogen. There is a simple rule to identify the limiting reagent. the explanation is shown below

C) The maximum amount of water produced is given by the limiting reagent (hydrogen) and this quantity is 198g of water

2)

The percent yield is 89.65%

Explanation:

A) In this case you must take into account that the molecules involved in the reaction are oxygen and hydrogen in its diatomic form. This is because the monoatomic form is unstable in nature or said in another way, both oxygen and hydrogen are only found in nature in diatomic form.

In that order of ideas, you can pose the following equation:

(2) [tex]H_2 +O_2[/tex] ⇒ [tex]H_2O[/tex]

The equation (2) is not balanced, for that reason you should balance the amount of atoms of each element. I suggest start balancing oxygen and then balance the hydrogen. If you do that, the result will be equation (1).

B)  The rule to identify the limiting reagent is the following:

Once you balance the equation, identify the stoichiometric coefficient of each reagent Divide the amount of moles provided in the problem by the stoichiometric coefficient. You have to do that for each reagent involved in the reaction.

In this case you have:

[tex]oxygen: \frac{11mol}{1mol} =11[/tex]

[tex]hydrogen: \frac{11mol}{2mol} =5.5[/tex]

The limiting reagent correspond to the smallest value calculated; in this case, the hydrogen.

C) If you want to calculate the amount of water produced you need the equation balanced. Take into account that the maximum amount produced of a product is given by the limiting reagent.

If you don´t understand the concept of limiting reagent, I invite you to analyze the following example:

You want to prepare sandwiches. To prepare a single sandwich you need two slices of bread and a slice of cheese. If you have 6 slices of bread and 6 slices of cheese, how many sandwiches can you prepare?. The answer is 3; as you can see in the example, the slices of bread limit the amount of sandwiches that you can prepare because if you do not have more bread, you can not prepare a sandwich. Let's assume now that you have 6 slices of bread and 2 slices of cheese. In this case, the limiting reagent is the cheese and there are 2 slices of bread leftover.

Continuing with the calculations, take into account that this should be based on the hydrogen (the limiting reagent). The procedure is shown below:

(3) [tex]11molH_2*\frac{2molH_2O}{2molH2}*\frac{18gH_2O}{1molH_2O}  =198g[/tex]

Note that the excercise provide 11 moles of the limiting reagent (hydrogen). You should relate the amount of moles of hydrogen with the amount of moles of the product (water). To do so, you have to identify the stoichiometric coefficient in the reaction for both the hydrogen and the water (remember, the equation should be balanced). Finally, the molecular weight of the water relate the amount of moles with its mass.

2) First of all, you must verify if the equation is balanced. Once the equation is balanced you must calculate the theoretical yield.

To do so, you assume that all the limiting reagent is consumed to form the product (sodium oxide in this case).

Take into account that the limiting reagent is the sodium because the reaction is carried out with excess oxygen

The procedure is similar to the one shown in equation (3), but now you have mass instead of moles; this implies that first of all you have to transform the mass to moles :

[tex]34,6gNa*\frac{1molNa}{23gNa}=1.504molNa[/tex]

Note that 23 is the molecular weight of the sodium.

Once you calculate the amount of moles of limiting reagent, follow the procedure in equation (3):

(4) [tex]1.504molNa*\frac{2molNa_2O}{4molNa}*\frac{62gNa_2O}{1molNa_2O}=46,624gNa_2O[/tex]

46,624g is the theoretical yield of the reaction. The experimental yield of the reaction is given by the excercise, note that the problem state that 34.6 g of sodium produce 41.8g of sodium oxide.

The percent yield is calculated using equation (5)

(5) [tex]percent yield=\frac{ExperimentalYield}{TheoreticalYield}*100[/tex]

Replacing in equation (5) you have:

[tex]%yield=\frac{41.8}{46.624}*100=89.65[/tex]

key concept: The experimental yield can never be greater than theoretical yield, for that reason the percent yield is always lower than 100%. If the percent yield calculated is greater than 100 you should check carefully the procedure.

What are the characteristics of electrical energy?

Answers

Please Mark as brainliest

Explanation:

Characteristics of electric energy Typically, these negative electrical charges (electrons) move through the electrical conductor. Normally the conductor is made of a metallic material because they have a greater amount of free electrons. Electrons and protons are charged particles within an electric field.

Final answer:

Electrical energy is the ability of electric charges to perform work due to their relative positions. It is continuously converted to other forms of energy in an electric circuit, and it can also be generated mechanically and stored for later use.

Explanation:

Electrical energy, which falls under the broader category of physical energy forms, has some distinct features. Firstly, electrical energy is the ability of charged particles to perform work as a result of their positions relative to each other - this is also referred to as electric potential energy. It's important to note that positive charges usually move from regions of high potential to low while negative ones do the opposite.

Secondly, electrical energy is commonly present in electric circuits where it gets continually converted into other forms of energy. For instance, in a conductor, the electrical energy transforms into thermal energy. These energy conversions are radically important because they illustrate the principle of energy conservation, which states that energy can neither be created nor destroyed, only transformed.

Lastly, electrical energy is produced mechanically by moving a conductor through a magnetic field and stored in devices such as batteries and capacitors for future use. In biological systems, electrolytes in cells and body fluids supply electrical energy, leading to voltage changes that aid in transmitting impulses in nerve and muscle cells.

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Together, respiration and photosynthesis keep the levels of carbon dioxide and oxygen in the atmosphere _____.

A. fairly constant

B. always changing

C. decreasing

D. increasing

Answers

Answer:

A. fairly constant

Explanation:

In photosynthesis plants used carbon dioxide and produced oxygen while in respiration oxygen is taken and carbon dioxide is released thus level of both gases remain constant.

Aerobic respiration

It is the breakdown of glucose molecule in the presence of oxygen to yield large amount of energy. Water and carbon dioxide are also produced as a byproduct.

Glucose + oxygen → carbon dioxide + water + 38ATP

Photosynthesis:

It is the process in which in the presence of sun light and chlorophyll by using carbon dioxide and water plants produce the oxygen and glucose.

Carbon dioxide + water + energy →   glucose + oxygen

water is supplied through the roots, carbon dioxide collected through stomata and sun light is capture  by chloroplast.

Chemical equation:

6H₂O + 6CO₂ + energy  →   C₆H₁₂O₆ + 6O₂

Describe an experiment for the preparation and collection of Oxygen sodium peroxide​

Answers

Answer:

Making oxygen

Oxygen can be made from hydrogen peroxide, which decomposes slowly to form water and oxygen:

hydrogen peroxide → water + oxygen

2H2O2(aq) → 2H2O(l) + O2(g)

The rate of reaction can be increased using a catalyst, manganese(IV) oxide. When manganese(IV) oxide is added to hydrogen peroxide, bubbles of oxygen are given off.

Apparatus arranged to measure the volume of gas in a reaction. Reaction mixture is in a flask and gas travels out through a pipe in the top and down into a trough of water. It then bubbles up through a beehive shelf into an upturned glass jar filled with water. The gas collects at the top of the jar, forcing water out into the trough below.

To make oxygen in the laboratory, hydrogen peroxide is poured into a conical flask containing some manganese(IV) oxide. The gas produced is collected in an upside-down gas jar filled with water. As the oxygen collects in the top of the gas jar, it pushes the water out.

Instead of the gas jar and water bath, a gas syringe could be used to collect the oxygen.

What electron could have quantum numbers n=4 l=2 ml= -2 ms= 1/2

Answers

Answer:

4d¹ electron has quantum numbers

n=4; l=2; ml= -2; ms= 1/2

Explanation:

There are 4 quantum numbers, namely

the principal quantum number (n)

the orbital angular momentum quantum number (l)

the magnetic quantum number (ml)

the electron spin quantum number (ms)

The principal quantum number describes the orbit or shell of the electron

here n = 4 ⇒ electron is in 4th shell

the orbital angular momentum quantum number describes the shape of orbital the electron is present in.

l= 0 ⇒ s-orbital

l= 1 ⇒ p-orbital

l= 2 ⇒ d-orbital

l= 3 ⇒ f-orbital

In our case l= 2 ⇒ p-orbital

ml specifies in which orbital electron is present of given shape

ml has 2l+1 values,which range from -1 to +l

here l = 2 ⇒ ml has 2(2)+1 = 5 values (-2 to +2)

so electron is present in one of the five d-orbitals

ms represents the spin of electron (+1/2 or -1/2)

If  +1/2 represents clockwise then -1/2 represents anti-clockwise and vice-versa.

⇒  4d¹ electron has quantum numbers

n=4; l=2; ml= -2; ms= 1/2.

Final answer:

An electron with quantum numbers n=4, l=2, ml=-2, ms=1/2 is located in the fourth energy level of an atom, within a 'd' shaped orbital pointing in a predetermined space direction, with an upward spin.

Explanation:

The student's question refers to a specific electron in an atom characterized by four quantum numbers: principal quantum number (n=4), azimuthal quantum number (l=2), magnetic quantum number (ml=-2), and spin quantum number (ms=1/2). These quantum numbers reveal the electron's energy level, shape, orientation in space, and spin direction, respectively.

Therefore, an electron with these quantum numbers is found in the fourth energy level (n=4) of an atom. The shape of the orbital where this electron is located is a 'd' orbital (l=2). The negative sign of the magnetic quantum number reveals that the orbital is oriented in one of the five spatial orientations possible for 'd' orbitals. Lastly, the spin quantum number of 1/2 means the electron's spin is up.

This shows the student's question is related to quantum mechanics studies in chemistry and physics, specifically atomic structure and electron configuration.

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Which substance is oxidized and which is reduced in this reaction?

Cl2 + 2HBr → 2HCl + Br2
A) HBr oxidized; HCl reduced
B) HCl oxidized; Cl2 reduced
C) Br2 oxidized; HBr reduced
D) Cl2 and Br2 oxidized; HBr reduced

Answers

Final answer:

In this reaction, Cl2 is reduced to form HCl and HBr is oxidized to form Br2.

Explanation:

In this reaction, Cl2 is being reduced to form HCl, and HBr is being oxidized to form Br2. The substance being reduced gains electrons, while the substance being oxidized loses electrons.



Cl2 + 2HBr → 2HCl + Br2



Cl2 is the oxidizing agent because it causes the oxidation of HBr, and HBr is the reducing agent because it causes the reduction of Cl2. The oxidizing agent is the species that gets reduced, while the reducing agent is the species that gets oxidized.

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Final answer:

In the reaction Cl2 + 2HBr → 2HCl + Br2, HBr is oxidized and Cl2 is reduced, making the correct choice A) HBr oxidized; HCl reduced.

Explanation:

In the reaction Cl2 + 2HBr → 2HCl + Br2, the substance being oxidized is HBr and the substance being reduced is Cl2. According to the provided half-reactions, oxidation involves the loss of electrons, and in this case, Br− (from HBr) loses electrons to form Br2. Conversely, the reduction involves the gain of electrons where Cl2 gains electrons to form 2Cl− (from HCl).

Therefore, the answer to the question is that HBr is oxidized; Cl2 is reduced, making the correct choice: A) HBr oxidized; HCl reduced. The oxidizing agent is Cl2 and the reducing agent is Br− from HBr.

How many moles of chlorine (Cl) atoms are in a sample of 1.72 × 1022 atoms?
a. 0.0286 mol Cl
b. 35.0 mol Cl
c. 1.03 × 1023 mol Cl
d. 1.04 × 1046 mol Cl

Answers

Answer:

0.0286 mol Cl

Explanation:

to convert atoms to moles, we need Avogadro's number.

1 mol= 6.02 x 10^23 atoms

1.72 x 10^22 atoms (1 mol/ 6.02 x 10^23)= 0.0286 moles

Do exponents need to be the same when multiplying in scientific notation?

Answers

Answer:

Not necessarily

Explanation:

The answer would be: not necessarily, there is no such requirement.

Whenever we're multiplying in scientific notation, we may simply multiply the numbers separately and the rest separately. Let's say that in a general case we have two numbers:

[tex]n_1 = a \cdot 10^b[/tex]

[tex]n_2 = c \cdot 10^d[/tex]

In order to multiply them, we:

multiply the numbers a and c firstly;multiply the 10s now applying the rule [tex]10^b\cdot 10^d = 10^{b + d}[/tex];multiply result from the step 1 by the result in step 2.

Let's apply this for some specific example, say, we have:

[tex]n_1 = 2\cdot 10^3[/tex]

[tex]n_2 = 3\cdot 10^4[/tex]

multiplying 2 and 3: [tex]2\cdot 3 = 6[/tex];multiplying the 10s: [tex]10^3\cdot 10^4 = 10^{3 + 4} = 10^7[/tex];multiplying the two results: [tex]6\cdot 10^7[/tex]

Examine the general structure of a molecule.



Which functional groups are in this molecule?
an alkyl halide and an alcohol
a carboxylic acid and an amine
an amine and an ester
an aldehyde and a carboxylic acid

Answers

Answer:

a carboxylic acid and an amine

Explanation:

A functional group is an atom or group of atoms inside a molecule that has comparable chemical properties anytime it appears in numerous compounds. When other parts of the molecule are not similar, some functional groups react in certain manners.

Carboxylic acid is a carbonyl-containing functional group, with carbon atom bonded to an hydroxyl group on one side and on the other side is either a carbon or hydrogen atom.  

An amine group is composed of a nitrogen atom bonded to a combination of carbon and hydrogen atoms.

Which type of energy releases greenhouse gases when used to make electricity?

A.) Nuclear

B.) Hydroelectric

C.) Geothermal

D.) Natural gas

Plz help! Apex:(((((

Answers

Answer:

Natural Gas

Explanation:

It is when fossil fuels like coal and other natural gasses are burned that greenhouse gas is emitted. Nuclear power does hold some danger if left unchecked, but does not contribute to greenhouse gasses in a significant way. Hydroelectric energy does not produce any greenhouse gasses as well. Geothermal energy is also something that does not produce greenhouse gasses and is renewable. The main reason why natural gasses are still used although they produce large numbers of dangerous gasses is because they cost much less than the other energy sources on this list.

Answer:

natural gas :)

Explanation:

Cacl2+na3po4 ca3po42 + nacl

Answers

Answer:

3CaCl₂ + 2Na₃PO₄→ Ca₃(PO₄)₂ + 6NaCl

Explanation:

We are given the Equation;

CaCl₂ + Na₃PO₄→ Ca₃(PO₄)₂ + NaCl

Assuming the question requires us to balance the equation;

A balanced chemical equation is one that has equal number of atoms of each element on both sides of the equation.Balancing chemical equations ensures that they obey the law of conservation of mass in chemical equations.According to the law of conservation of mass in chemical equation, the mass of the reactants should always be equal to the mass of the products.Balancing chemical equations involves putting appropriate coefficients on the reactants and products.

In this case;

To balance the equation we are going to put the coefficients 3, 2, 1, and 6.Therefore; the balanced equation will be;

3CaCl₂ + 2Na₃PO₄→ Ca₃(PO₄)₂ + 6NaCl

For hydrated copper (II) sulfate calculate the mass percentage of water in your hydrated crystals.

Answers

Answer:

56.44 %

Explanation:

The formula of copper(II) sulfate pentahydrate is [tex]CuSO_4\cdot 5H_2O[/tex].

In order to calculate the mass percentage of water in it, we may assume that we have 1 mol of copper(II) sulfate pentahydrate. In general, the mass percentage is a ratio between the mass of a component and the total mass of the compound expressed in percent:

[tex]\omega = \frac{m_c}{m_t}\cdot 100 \%[/tex]

Since we're taking 1 mole of a substance here, we may state that the mass percentage of water will be calculating using molar masses instead:

[tex]\omega_{H_2O} = \frac{5M_{H_2O}}{M_{CuSO_4\cdot 5 H_2O}}\cdot 100 \%[/tex]

Notice that we take 5 molar masses of water, as 1 mole of copper(II) sulfate pentahydrate contains 5 moles of water molecules, then:

[tex]\omega_{H_2O} = \frac{5\cdot 18.016 g/mol}{159.609 g/mol}\cdot 100 \% = 56.44 \%[/tex]

Write the formulae and names of compounds formed by combination of
(i) Fe3+ and SO4 2- ii) NH4+ and CO3 2-

Answers

Answer:

(i) Formula = Fe₂(SO₄)₃

   Name = Iron (III) Sulfate or ferric sulfate

(ii) Formula (NH₄)₂CO₃

    Name = Ammonium Carbonate

Explanation:

Data given:

(i) Fe³⁺ and SO₄²⁻

ii) NH₄⁺ and CO₃²⁻

Formula and named of the compound =?

Solution:

(i) compound from Fe³⁺ and SO₄²⁻ and its name

writing a formula in combined form

The symbols of two ions written together that is FeSO₄The charges shown on each atom is its valency and it show its combining tendency so iron will combine with 3 sulfate ions and sulfate ion will combine with 2 iron ionsWhen two ions combine their valencies should be write on the base of the alternate ions. that is 2 will be at the base of Fe and 3 will be at the base of SO₄ without chargesSo the combined formula and name will be

compound formula form from Fe³⁺ and SO₄²⁻ = Fe₂(SO₄)₃

Name of the compound = Iron (III) Sulfate or ferric sulfate

______

(ii) compound from NH₄⁺ and CO₃²⁻ and its name

writing a formula in combined form

The symbols of two ions written together that is NH₄CO₃The charges shown on each atom is its valency and it show its combining tendency so NH₄⁺ will combine with 1 carbonate ion and carbonate ion will combine with two NH₄⁺ ionsWhen two ions combine their valencies should be write on the base of the alternate ions 1 should not be written. 2 will be at the base of NH₄⁺ without chargeSo the combined formula and name will be

compound formula form from NH₄⁺ and  CO₃²⁻ = (NH₄)₂CO₃

Name of the compound = Ammonium Carbonate

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