Energy stored in the bonds that hold together the atoms and molecules of all substances is called Energy stored in the bonds that hold together the atoms and molecules of all substances is called

Answers

Answer 1

Answer:

Chemical energy!

Answer 2

Answer:

CHEMICAL ENERGY is your correct answer for this question

Explanation:


Related Questions

A plutonium atom undergoes nuclear fission. Identify the missing element in the nuclear equation.

Answers

Answer:

[tex]^92^{234}U[/tex]

Explanation:

Plutonium is a heavy atom with a high mass to neutron ration (N/Z). Atoms with Z > 50 and an M/Z ratio of 1.25 or above tend to decay in a nuclear fission in which they release alpha particle, also known as a helium nucleus.

Let's say that our products are alpha particle and some unknown nucleus X with a mass of M and an atomic number of Z. Then our nuclear decay equation becomes:

[tex]_94^{238}Pu\rightarrow _2^4\alpha + _Z^M{X}[/tex]

In order to identif X, we need to apply the law of mass conservation first. That is, the mass of reactants should be equal to the mass of products:

[tex]238 = 4 + M\therefore M = 238 - 4 = 234[/tex]

Similarly, apply the law of charge conservation to identify Z:

[tex]94 = 2 + Z\therefore Z = 92[/tex]

Z = 92 corresponds to uranium, meaning X is:

[tex]^92^{234}U[/tex]

How did early chemists determine which substances were elements?
(A) They knew how many protons were in the atoms.
(B) They knew how many electrons were in the outer shell of every atom.
(C) They knew what substances were mixtures.
(D) They knew which substances could not be broken down by chemical means.

Answers

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The correct answer would be option D

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They knew which substances could not be broken down by chemical means.

By definition, an element is the smallest part of a substance which has independent existence and can not be broken down by chemical means.

We must remember that the early chemists didn't have the luxury of the sophisticated equipment we have today many of which can literally "see through" a substance.

The had to depend on rather crude methods and instruments. Amidst all that, they still knew which substances could not be broken down by chemical means and those that could not. Those that could not be broken down by chemical means were labelled as elements and characterized.

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where would you expect to find the smallest atoms?​

Answers

Answer:

Because of these two trends, the largest atoms are found in the lower left corner of the periodic table, and the smallest are found in the upper right corner (Figure 2.8.

Explanation:

comment how it helps

if a balloon had an initial volume of 100ml at pressure of 3.2 atm and the pressure was decreased to 1.9 atm, what would the new volume of the balloon be assuming constant temperature

Answers

Answer:

168.4 mL

Explanation:

Data Given

initial volume V1 of gas in balloon = 100 mL

initial pressure P1 of gas in balloon = 3.2 atm

final pressure P2 of gas in balloon = 1.9 atm

final volume V2 of gas in balloon = ?

Solution:

This problem will be solved by using Boyle's law equation at constant Temperature.

The formula used

                  P1V1 = P2V2

As we have to find out Volume, so rearrange the above equation

                  V2 = P1V1 / P2

Put value from the data given

V2 = 100 mL x 3.2 atm / 1.9 atm

V2 = 168.4 mL

So the final Volume of gas in baloon =  168.4 mL

during photosynthesis water and carbon dioxide react to from oxygen and glucose how do the products differ from the reactants

Answers

Answer:

Those are the waste products

Explanation:

Glucose and oxygen are produced as a waste product as a result of photosynthesis

What is the answer to this chemthink?

Answers

Answer:

1 and 2

Explanation:

Releasing some of the gas would reduce the amount of atoms inside the container therefore reducing pressure.

Cold temperature would slow down the particles in the container leading to fewer collisions per second which translates to less pressure

Explain what a limiting reactant is and why it is important in stoichiomerty?

Answers

Answer:

It determines the maximum amount of the product that can be formed

Explanation:

Usually when performing a chemical reaction, it is hard to measure the exact amounts of the two reactants to react completely. This is why generally we take one reactant as our limiting reagent and another reagent in excess.

The reactant that is limiting reacts completely, while the reactant in excess still remains in a solution after reaction is over.

The importance of the limiting reactant is huge: it determines the maximum amount of the product that can be formed. It's limiting and, therefore, the extent of the reaction depends on how much of the limiting reagent we have. According to stoichiometry, we find the moles of a product formed directly from the limiting reagent, while the reagent in excess doesn't provide any relevant information.

A limiting reactant is a reactant that is used up first in a chemical reaction and determines the maximum amount of product that can be created. It is important in stoichiometry for calculating theoretical yields and ensuring the efficient and safe use of reactants.

A limiting reactant in a chemical reaction is the substance that is totally consumed first and hence determines the amount of product formed. The importance of a limiting reactant in stoichiometry lies in its role in predicting the theoretical yield of a reaction. When reactants are not present in perfect stoichiometric ratios as indicated by the balanced chemical equation, one will be exhausted before the others, thus limiting the formation of the product. This reactant is the limiting reagent, and the remaining substances are considered to be in excess.

An important aspect of stoichiometry is performing mass-mass calculations to establish how much product can be produced based on the amount of the limiting reactant. Understanding which reactant will be consumed first is crucial for evaluating a chemical process, ensuring safety (such as in the case of the space shuttle's fuel), and optimizing resource usage. Alternatively, identifying the limiting reactant can be approached by calculating the expected amount of product from the complete reaction of each reactant and comparing which yields the least amount of product.

if 2.4g of magnesium burns in oxygen. calculate (I) the mass of magnesium oxide formed (ii) volume of oxygen at stp.​

Answers

Answer: i. 4g of MgO

ii. 1.12dm3

Explanation:Please see attachment for explanation

The amount of space matter takes up is its volume
True
False​

Answers

True

Explanation: MATTER IS ANYTHING THAT HAS VOLUME AND MASS. ALL MATTER TAKES UP SPACE. THE AMOUNT OF SPACE TAKEN UP, OR OCCUPIED, BY AN OBJECT IS KNOWN AS THE OBJECT'S VOLUME.
Final answer:

The amount of space matter takes up is not its volume.

Explanation:

False. The amount of space matter takes up is its volume, which is a concept in Physics. Volume is measured in cubic units, such as cubic meters or cubic centimeters, depending on the scale. It can be calculated by multiplying the length, width, and height of an object or by using specific formulas for different shapes.

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Periodicity is best defined as:
the fact that elements increase in atomic mass in a regular way
the repeating nature of physical and chemical properties with atomic numbe
the regular growth of atomic size with atomic mass
the consistent decrease of nuclear charge with atomic mass
the repeating nature of atomic nuclear structure

Answers

Answer:

The repeating nature of physical and chemical properties with atomic number

Explanation:

Periodic table is designed in a way in which elements are divided in groups and periods. Periods are rows and groups are columns. The elements in groups share similar properties due to the same number of valence electrons they have. Going along each period, we'll always get back to the same group at some point. This is why we have periodic trends, the trends repeat gradually when we finally reach the same group we're analyzing.

Physical and chemical properties vary periodically. For example:

atomic radius decreases from left to right along the period;ionization energy increases from left to right along the period;electronegativity increases from left to right along the period;metallic properties decrease from left to right along the period.

Which of the following BEST describes the process of evolution by natural selection?
A. a rapid change of the traits of a species over time
B. a gradual change of the traits of a species over time
C. a rapid change of the traits of an organism over time
D. a gradual change of the traits of an organism over time

Answers

Answer:

The correct option is B)  a gradual change of the traits of a species over time

Explanation:

The theory of natural selection explains the gradual changes which occur in the population of a species over time. According to natural selection, those organisms which are better adapted to live in an environment survive and pass on their traits to their offsprings. As a result, the traits of a species tend to change over time through the process of evolution. Evolutionary changes do not occur rapidly, instead, they can take many years to occur.

Which ph range is ideal for nitrogen in corn crops

Answers

The desirable soil pH for corn ranges from 5.8 to 7.0.

39. Which of the following conversion factors would you use to change 18 kilometers to meters?
A. 1000 m/1 km
B. O1 km 1000 m
C. 100 m 1 km
D. 1 km 100 m

Answers

Answer: A

Explanation:

A car driving at 105 km/h. what is the speed in mi/min?
(1 mi = 1.61 km)

Answers

Answer:

1.087 mi/min

Explanation:

Given data:

Speed of car in Km/h = 105

Speed of car in miles/min = ?

Solution:

It is given that one miles = 1.61 Km

while it is known that one hour = 60 minutes

Thus in order to convert the km/h into mi/min we will divide the given value by 96.561.

105 / 96.561

1.087 mi/min

_____ energy is required to remove an electron from an atom.
Charging
Electrical
Olonization
Electron​

Answers

Answer:

The correct answer is Ionization.

Explanation:

Ionization energy can be defined as minimum amount of energy that is required to remove an electron from the outer orbital or the valence orbital of an atom.

      Ionization energy depends on the size of the atom.If the atom is small in size that means the electrons of outer orbital are strongly attracted by the positively charged nucleus.As a result more energy is required to remove an electron from the outermost orbital of that atom.

  As a result the ionization energy of that atom will be high.

How many atoms are there in 18 grams of silver

Answers

Answer:

Number of atoms= [tex]1.004\times 10^{23}[/tex] atoms

Explanation:

1 mole is the mass of substance which contain [tex]6.022\times 10^{23}[/tex]

particles of that substance.Its symbol is 'n'.

Here the quantity[tex]6.022\times 10^{23}[/tex] is called Avogadro number and it is denoted by [tex]N_{0}[/tex].

Mass of the substance in grams is called is molar mass.It is denoted by'M'

Moles can be calculated by :

1) [tex]n=\frac{given\ mass}{molar\ mass}=\frac{w}{M}[/tex]

2)[tex]n=\frac{Number\ of\ particles}{Avogadro\ number}=\frac{N}{N_{0}}

[/tex]

compare 1) and 2) formula, we get

[tex]\frac{N}{N_{0}=\frac{w}{M}[tex].................(i)

For silver (Ag), M=107.86 g

w=18 g  (given) and [tex]{N_{0}=6.022\times 10^{23}[/tex]

Put the values of w,M and [tex]{N_{0}[tex] in equation (i) and solve for N

[tex]\frac{N}{6.022\times 10^{23}}=\frac{18}{107.86}[/tex]

[tex]N=\frac{18}{107.86}\times 6.022\times 10^{23}[/tex]

[tex]N= 1.004\times 10^{23}[tex]

Hence Number of atoms of silver= [tex]1.004\times 10^{23}[/tex] atoms

In an experiment, a student wants to increase the rate of a reaction that involves gases. Which change to the re
accomplish this?
O
Increase the volume to dec ease pressure and to increase concentration.
Increase the volume to increase pressure and to decrease concentration.
Decrease the volume to decrease pressure and to increase concentration
Decrease the volume to increase pressure and to increase concentration.
O
O

Answers

Answer:

Decrease the volume to increase pressure and to increase concentration.  

Explanation:

Increasing the concentration will increase the number of collisions per second and therefore the rate of reaction.

A and B are wrong. You want to decrease the volume.

C is wrong. According to Boyle's Law, you can't decrease both the volume and the pressure at the same time.

What is the wavelength of a light wave if the frequency of the wave is 7.1 x 10^14 s^-1 (Hz)?

Answers

Answer:

Wavelength =  [tex]4.225\times 10^{-7}\ m[/tex].

Explanation:

Given:

The wave is a light wave. So, speed of light wave is, [tex]c=3\times 10^8\ m/s[/tex]

The frequency of the light wave is, [tex]f=7.1\times 10^{14}\ s^{-1}[/tex]

Let the wavelength of the light wave be [tex]\lambda[/tex].

Now, velocity of a wave is related to its frequency and wavelength as:

[tex]c=f\lambda[/tex]

Now, rewriting the above formula in terms of wavelength [tex]\lambda[/tex], we have

[tex]\lambda=\dfrac{c}{f}[/tex]

Plug in [tex]c=3\times 10^8\ m/s[/tex] and  [tex]f=7.1\times 10^{14}\ s^{-1}[/tex]. Solve for [tex]\lambda[/tex]. This gives,

[tex]\lambda=\dfrac{3\times 10^8\ ms^{-1}}{7.1\times 10^{14}\ s^{-1}}\\\\\lambda=4.225\times 10^{-7}\ m[/tex]

Therefore, the wavelength of the light wave is [tex]4.225\times 10^{-7}\ m[/tex].

Can someone help me I begging you all see this please

Answers

Answer:

26. Mass of sugar = 100 g

27. a).m/m % = 8.67 %

     b).m/m% = 20%

28.a). Mass of sugar = 12.5 g

     b).Mass of sugar = 12.5 g

     c).Mass of sugar = 30 g

Explanation:

26. Use formula:

[tex]m/m = \frac{mass\ of\ solute}{mass\ of\ solution} \times 100[/tex]

m/m = 20%

mass of solution = 500 g

mass of Solute = mass of sugar = ?

insert in the formula,

[tex]20 = \frac{mass\ of\ solute}{500} \times 100[/tex]

[tex]mass\ of\ solute = 20 \times 5[/tex]

mass of solute = 100 g

27. a)

[tex]m/m = \frac{mass\ of\ solute}{mass\ of\ solution} \times 100[/tex]

mass of Barium hydroxide(solute) = 13 g

mass of solution = 150 g

[tex]m/m = \frac{13}{150} \times 100[/tex]

m/m % = 8.67 %

b).

[tex]m/m = \frac{mass\ of\ solute}{mass\ of\ solution} \times 100[/tex]

mass of Glucose (solute) = 50 g

mass of solution = 250 g

[tex]m/m = \frac{50}{250} \times 100[/tex]

m/m% = 20%

28. a)

[tex]m/m = \frac{mass\ of\ solute}{mass\ of\ solution} \times 100[/tex]

m/m% = 5

mass of solution = 250 g

mass of solute = ?

[tex]mass\ of\ solute= \frac{mass\ of\ solution}{100} \times m/m[/tex]

[tex]mass\ of\ solute= \frac{250}{100} \times 5[/tex]

mass of sugar = 12.5 g

b).

m/m% = 2.5%

mass of solution = 500 g

mass of solute = ?

[tex]mass\ of\ solute= \frac{mass\ of\ solution}{100} \times m/m[/tex]

[tex]mass\ of\ solute= \frac{500}{100} \times 2.5[/tex]

mass of sugar = 12.5 g

c).

m/m% = 3 %

mass of solution = 1 kg = 1000 g

mass of solute = ?

[tex]mass\ of\ solute= \frac{1000}{100} \times 3[/tex]

Mass of sugar = 30 g

The first four planets in our solar system are rocky. How does that relate to Newton’s law of universal gravitation?

Answers

Explanation:

According to Newton law of gravity, the strength of gravitational pull between two objects is related to their masses, directly, and inversely by the distance between them;

F = G * (M₂ – M₁) / d where;

F – the force of gravity

G – gravitational constant

M₂ – the mass of one object

M₁ – the mass of the other object

d – the distance between the two objects

The rocky planets have a higher mass than the gas planets hence will be strongly ‘feel’ the gravitational pull of the star in the solar system revolves about.  This is why rocky planets are closer to their star while gas planets are towards the outer edges.

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how many chemical bonds can a single atom of these elements form: hydrogen, carbon, nitrogen

Answers

Answer:

Covalent Bonds

Explanation:

Nitrogen and phosphorus each have five electrons in their outer shells, which can hold up to eight electrons. Nitrogen atoms can form up to four covalent bonds.

Oxygen forms two bonds, nitrogen three bonds, hydrogen one bond, and carbon four bonds. When creating Lewis structures at the beginning chemistry level, these four components are frequently employed.

What  is lewis structure ?

The diagrams known as Lewis structures, often referred to as Lewis dot formulas, Lewis dot structures, electron dot structures, or Lewis electron dot structures, depict the interactions between the atoms in a molecule as well as any lone pairs of electrons that may be present.

Lewis structures, often called Lewis-dot diagrams, depict the bonding between a molecule's atoms and its lone pairs of electrons. When used in conjunction with hybrid orbitals, Lewis structures can also be helpful in predicting molecular geometry.

Four covalent bonds are possible for carbon. Chemical bonds known as covalent bonds are formed between nonmetal. Two atoms share a pair of electrons in a covalent link.

Thus, When creating Lewis structures at the beginning chemistry level, these four components are frequently employed.

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Electron pairs exist in many positions, or ____, around the a central atom. How is this number determined?

Answers

The number of electron pairs around a central atom determines the molecule's molecular geometry, which is based on the VSEPR theory. By counting the total electron pairs (both bonding and lone pairs), one can use a reference table to predict the geometry of the molecule.

The number of electron pairs around a central atom is determined by the molecule's Lewis structure, which includes both bonding pairs (BP) and lone pairs (LP). This number is often referred to as the Steric Number (SN) or Electron Group Geometry. The basic molecular geometry depends on the count of these electron pairs and their arrangement to minimize repulsions, following a specified shape determined by the VSEPR (Valence Shell Electron Pair Repulsion) theory.

To determine the molecular geometry, one must:

Count the total number of electron pairs (bonding and lone) around the central atom.

Determine the geometry of the molecule using a reference table that correlates the number of electron pairs to geometrical shape.

For example, a molecule with three electron groups around the central atom which includes two double bonds and one lone pair initially adopts a trigonal planar arrangement to minimize repulsion. However, the presence of a lone pair can adjust the actual molecular geometry from this initial layout.

What powdery mineral is hazardous when airborne? Mercury, Radon, asbestos or uranium

Answers

Answer: Uranium

Explanation:

23. Which of the following describes ionic bonds?
a. lonic bonds are weak bonds between two water molecules
Electrons are shared between two atoms
C. Electrons are transferred from one atom to another
d. Protons are transferred from one atom to another

Answers

Answer:

b.Electrons are shared between two atoms.

C. Electrons are transferred from one atom to another

Would it be Hydroelectric?

Answers

Answer:

A. Biomass

Explanation:

Biomass must be burned to be useful as a fuel.

The combustion of biomass produces carbon dioxide, which is a greenhouse gas.

B, C, and C are wrong. Once these energy sources are built, they produce no greenhouse gases.

4. A student is doing experiments with CO2(q) . Originally a sample of the gas is in a rigid container at 299 Kand 0.70 atm. The student increases the temperature of the CO2(g) ) in the container to 425 K the CO2(g)mo molecul (b) Calculate the pressure of the CO - (g) ) in the container at 425 K (C) In terms of kinetic molecular theory, briefly explain why the pressure of the CO2(g) in the container changes as it is heated to 425 K. (d) The student measures the actual pressure of the CO2(g) in the container at 425 K and observes that it is less than the pressure predicted by the ideal gas law . Explain this observation ,

Answers

Answer:

b. 0,99atm

c. Answer is in the explanation

d. Answer is in the explanation

Explanation:

b. Using Gay-Lussac's law:

P₁T₂ = P₂T₁

P₁: 0,70 atm; T₂: 425K; P₂: ??; T₁: 299K

0,70atm×425K / 299K = 0,99 atm

c. Using kinetic molecular theory, the increasing of temperature increases the kinetic energy of gas particles and if kinetic energy increases, the pressure increases. That means the increasing of temperature increases the pressure in the system.

d. Now, the increases in kinetic energy of gases increase the collisions betwen particles. As these intermolecular forces that are not taken into account in ideal gas law, the observed pressure will be different to the pressure predicted by ideal gas law.

I hope it helps!

The pressure of the gas increases from 0.70 atm to 0.99 atm as the temperature is increased. The interaction of the gas molecules causes the pressure of the gas to deviate from the predicted value.

From the information in the question;

Initial temperature(T1) =  299 K

Initial pressure (P1) = 0.70 atm

Final pressure (P2) = ?

Final temperature (T2) = 425 K

Given that;

P1/T1 = P2/T2

P1T2 = P2T1

P2 = P1T2/T1

P2 = 0.70 atm × 425 K/ 299 K

P2 = 0.99 atm

In terms of the kinetic molecular theory, we know that the pressure of a gas has to do with its bombardment of the walls of the container. When the temperature of the gas is increased, the gas molecules become more energetic and bombard the walls of the container more frequently hence the pressure of the gas increases.

The particles of an ideal gas do not to interact with each other according to theory. However, real gases molecules interact with each other. Hence, actual pressure of the CO2(g) in the container at 425 K is less than the pressure predicted by the ideal gas law. More significant particle interaction decreases the pressure of the gas compared the value predicted based on the ideal gas law.

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Which type of rock is most likely to form because of high heat and pressure?

igneous
magma
sediment
metamorphic

Answers

Answer:

metamorphic

Explanation:

Metamorphic rocks form from heat and pressure changing the original or parent rock into a completely new rock. The parent rock can be either sedimentary, igneous, or even another metamorphic rock. -

samikshajadhav16

Answer:

Explanation:

D

Surrounding ions with water molecules is known as

Answers

Answer:

Hydration  

Explanation:

In water, ions are surrounded by a sphere of water molecules called a hydration shell. The process of forming this shell is called hydration.

A student has two identical glasses of milk except that the temperature of the milk in one glass is 40ºF
and the temperature of the milk in the other glass is 80ºF.
At which temperature does the milk have more thermal energy? Explain

Answers

Answer:

[tex]80^oF[/tex]

Explanation:

We may only compare thermal energy of the two objects when they have identical masses. In this case, this is true: the two objects have equal masses.

The first glass of milk is at a lower temperature, while the second glass of milk is at a higher temperature. Remembering the second law of thermodynamics, heat spontaneously flows from hotter objects to colder ones. This means, the higher the temperature of an object, the greater the thermal energy.

Think about it this way: the higher the temperature, the higher the kinetic energy of the particles (since [tex]E_k = \frac{3}{2}kT[/tex]). The greater the kinetic energy, the greater the velocity. This means a greater amount of energy will be transferred by the object of the same mass but with a higher temperature, as particles are more likely to collide.

Which is a type of protein?

A.) Triglyceride

B.) Nucleotide

C.) Disaccharide

D.) Enzyme

HELP!!!

Answers

D. Enzyme

Because it contains amino acids which are the building blocks of proteins. Additionally the other answer choices are different macromolecules

Answer:

enzyme because it is made of protein

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