1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
juin [17]
3 years ago
9

4. Describe in detail the relationship between chemical bonds and energy. What must be true of the bonds for a reaction to be en

dothermic, and what must be true for the reaction to be exothermic?
Chemistry
1 answer:
tamaranim1 [39]3 years ago
7 0
When a bond is formed, the energy is released. Also, it must be supplied when the bond is broken.
In an endothermic reaction, the energy required to break the bond in the reactants must be greater than the energy released forming the bond in the product.
In an exothermic reaction more energy is released in forming  the bonds on the product than is absorbed to break the bonds in the reactants.
You might be interested in
What did Thomas Young, Max planck and Albert Einstein contribute towards the nature of light?
Lera25 [3.4K]

The contribution to the nature of light-

Thomas Young - wave nature of light (double-slit experiment)

Max Planck - E = hv

Albert Einstein - a quantum theory of light

Thomas Young proposed the most important double-slit experiment which shows that light acts like a wave and shows the pattern of interferences.

Max Planck proposed that light is proportional to frequency. He gave the equation, E = hv, where E is the energy of light, h is Planck's constant, and v is the frequency.

Albert Einstein proposed the quantum theory of light. He determined that light exists in discrete quanta of energy called photons.

To learn more about the nature of light, visit: brainly.com/question/4423091

#SPJ9

5 0
2 years ago
What information is needed to calculate the percent composition of a compound
IrinaVladis [17]

Percent Composition by Mass. Percent composition is calculated from a molecular formula by dividing the mass of a single element in one mole of a compound by the mass of one mole of the entire compound. This value is presented as a percentage.

The best answer. :)

6 0
3 years ago
Read 2 more answers
Help please fast will mark as Brainliest
wlad13 [49]

Answer:

The answer is 2i on right hand side.

Explanation:

We should star by checking the equation from right.

First we check how many Zn r there in left hand side. Which is 1. Let us check how many Znr there in right hand side, there is 1.So Zn is balanced, and don't worry about Znplus2 on right hand side it is just the ions not how many zinc r there.

Now let us check how many I are there left hand side. Which is 2. Now how many I are there in right hand side? Only 1.

So we put 2 behind I.

Now there r 2 I on both sides.

Its simple actually.

3 0
3 years ago
Read 2 more answers
A rigid cylinder with a movable piston contains a sample of helium gas. The temperature of the gas is held
Varvara68 [4.7K]
<span>Assuming ideal gas, we can label this system to follow the Boyle's Law. This Law can be applied to systems held at constant temperature. The formula used is: PV=k, where k is a constant. From the formula, P and V are inversely proprotional. So, if you graph P vs V, the graph would start from the top, then curves down towards the right. </span>
8 0
3 years ago
Read 2 more answers
How many electrons can be held in the entire third energy level? (2 points)
AlladinOne [14]
8. The first electron level holds only 2, but every one after the first holds 8 only.
5 0
3 years ago
Read 2 more answers
Other questions:
  • Why does Hg2+ have a negative standard entropy
    6·1 answer
  • What might happen if a patient was to have a hip replacement using aluminium?
    7·1 answer
  • In the late 1 800s , experiments using cathode ray tubes led to the discovery of the
    13·1 answer
  • The complete combustion of 1.00 kg of coal releases about 3.0 x 10E7 J of energy. The conversion of 1.00 kg of mass into energy
    13·2 answers
  • If 1.02 g of nickel reacted with 750. mL of 0.112 M hydrobromic acid, how much of each will be present at the end of the reactio
    8·1 answer
  • Which of the following is a nonrenewable energy source? O A. Solar B. Hydroelectric C. Natural gas D. Biomass
    8·1 answer
  • 3. Plants grow best when it is not too hot or too​
    13·1 answer
  • What is neutron?<br>What is Atom?<br><br>​
    6·2 answers
  • How many grams of sulfur are required in the preparation of 35.7 moles of sulfur dioxide Sg + O2 SO2​
    7·1 answer
  • How many grams of carbon are contained in one mole of C3H8?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!