Question
Use the reaction to complete the sentence.
2CO+O2→2CO2
Carbon monoxide and oxygen combine to produce carbon dioxide. The total bond energy found in all the bonds of carbon dioxide together is 2,944 kJ
. The bond energy of each carbon-oxygen double bond in carbon dioxide is _____.
(1 point)
Responses
1,472 kJ
1472 k J
736 kJ
736 k J
368 kJ
368 k J
2,944 kJ
2944 k J
Reaction CH4 + 4Cl2 → CCl4 + 4HCl
Reactants Products
Bonds Present
4 H–C
4 Cl–Cl
4 C–Cl
4 H–Cl
Energy of Bonds Broken (Reactants) / Formed (Products)
4 × 411 kJ/mol
4 × 242 kJ/mol
4 × 327 kJ/mol
4 × 427 kJ/mol
Which statement about the change in bond energy of this reaction is correct?
(1 point)
Responses
The reaction is exothermic because the energy of each bond in the reactants is greater than the energy of a bond in the products.
The reaction is exothermic because the energy of each bond in the reactants is greater than the energy of a bond in the products.
The reaction is endothermic because the total bond energy of the reactants is greater than the total bond energy of the products.
The reaction is endothermic because the total bond energy of the reactants is greater than the total bond energy of the products.
The reaction is exothermic because the total bond energy of the reactants is less than the total bond energy of the products.
The reaction is exothermic because the total bond energy of the reactants is less than the total bond energy of the products.
The reaction is endothermic because the energy of each bond in the reactants is less than the energy of a bond in the products.A chemist is performing a chemical reaction In a lab. They are using a fume hood. Inside the fume hood, there is a set of beakers, flasks, and tubes with various chemicals being combined inside them. The fume hood is turned on in order to withdraw any toxic gases and expel them outside the building.
Which part of this system is designated as the chemical reaction system?
(1 point)
Responses
outside of the building
outside of the building
the glass containers
the glass containers
the chemicals
the chemicals
inside the fume hood
inside the fume hoodIn order to break water into hydrogen and oxygen, water is heated to more than 500°C. Which kind of reaction is this and why?(1 point)
Responses
It is exothermic because heat needs to be absorbed by the reactants to form the products.
It is exothermic because heat needs to be absorbed by the reactants to form the products.
It is exothermic because heat needs to be released by the reactants to form the products.
It is exothermic because heat needs to be released by the reactants to form the products.
It is endothermic because heat needs to be absorbed by the reactants to form the products.
It is endothermic because heat needs to be absorbed by the reactants to form the products.
It is endothermic because heat needs to be released by the reactants to form the products.Question
On an energy graph, the length of vertical lines represents _____.(1 point)
Responses
the number of atoms in the activated complex
the number of atoms in the activated complex
the amount of released or absorbed energy
the amount of released or absorbed energy
whether energy is released or absorbed
whether energy is released or absorbed
the number of reactant and product atoms
also put a b c or d
2CO+O2→2CO2
Carbon monoxide and oxygen combine to produce carbon dioxide. The total bond energy found in all the bonds of carbon dioxide together is 2,944 kJ
. The bond energy of each carbon-oxygen double bond in carbon dioxide is _____.
(1 point)
Responses
1,472 kJ
1472 k J
736 kJ
736 k J
368 kJ
368 k J
2,944 kJ
2944 k J
Reaction CH4 + 4Cl2 → CCl4 + 4HCl
Reactants Products
Bonds Present
4 H–C
4 Cl–Cl
4 C–Cl
4 H–Cl
Energy of Bonds Broken (Reactants) / Formed (Products)
4 × 411 kJ/mol
4 × 242 kJ/mol
4 × 327 kJ/mol
4 × 427 kJ/mol
Which statement about the change in bond energy of this reaction is correct?
(1 point)
Responses
The reaction is exothermic because the energy of each bond in the reactants is greater than the energy of a bond in the products.
The reaction is exothermic because the energy of each bond in the reactants is greater than the energy of a bond in the products.
The reaction is endothermic because the total bond energy of the reactants is greater than the total bond energy of the products.
The reaction is endothermic because the total bond energy of the reactants is greater than the total bond energy of the products.
The reaction is exothermic because the total bond energy of the reactants is less than the total bond energy of the products.
The reaction is exothermic because the total bond energy of the reactants is less than the total bond energy of the products.
The reaction is endothermic because the energy of each bond in the reactants is less than the energy of a bond in the products.A chemist is performing a chemical reaction In a lab. They are using a fume hood. Inside the fume hood, there is a set of beakers, flasks, and tubes with various chemicals being combined inside them. The fume hood is turned on in order to withdraw any toxic gases and expel them outside the building.
Which part of this system is designated as the chemical reaction system?
(1 point)
Responses
outside of the building
outside of the building
the glass containers
the glass containers
the chemicals
the chemicals
inside the fume hood
inside the fume hoodIn order to break water into hydrogen and oxygen, water is heated to more than 500°C. Which kind of reaction is this and why?(1 point)
Responses
It is exothermic because heat needs to be absorbed by the reactants to form the products.
It is exothermic because heat needs to be absorbed by the reactants to form the products.
It is exothermic because heat needs to be released by the reactants to form the products.
It is exothermic because heat needs to be released by the reactants to form the products.
It is endothermic because heat needs to be absorbed by the reactants to form the products.
It is endothermic because heat needs to be absorbed by the reactants to form the products.
It is endothermic because heat needs to be released by the reactants to form the products.Question
On an energy graph, the length of vertical lines represents _____.(1 point)
Responses
the number of atoms in the activated complex
the number of atoms in the activated complex
the amount of released or absorbed energy
the amount of released or absorbed energy
whether energy is released or absorbed
whether energy is released or absorbed
the number of reactant and product atoms
also put a b c or d
Answers
GPT-4o mini
Here are the answers to your questions, along with the letter designations:
1. **The bond energy of each carbon-oxygen double bond in carbon dioxide is _____.**
**Response:** 736 kJ
**Answer:** **C**
2. **Which statement about the change in bond energy of this reaction is correct?**
**Response:** The reaction is endothermic because the total bond energy of the reactants is greater than the total bond energy of the products.
**Answer:** **B**
3. **Which part of this system is designated as the chemical reaction system?**
**Response:** the glass containers
**Answer:** **B**
4. **Which kind of reaction is this and why?**
**Response:** It is endothermic because heat needs to be absorbed by the reactants to form the products.
**Answer:** **C**
5. **On an energy graph, the length of vertical lines represents _____.**
**Response:** the amount of released or absorbed energy
**Answer:** **B**
To summarize:
1. C
2. B
3. B
4. C
5. B
1. **The bond energy of each carbon-oxygen double bond in carbon dioxide is _____.**
**Response:** 736 kJ
**Answer:** **C**
2. **Which statement about the change in bond energy of this reaction is correct?**
**Response:** The reaction is endothermic because the total bond energy of the reactants is greater than the total bond energy of the products.
**Answer:** **B**
3. **Which part of this system is designated as the chemical reaction system?**
**Response:** the glass containers
**Answer:** **B**
4. **Which kind of reaction is this and why?**
**Response:** It is endothermic because heat needs to be absorbed by the reactants to form the products.
**Answer:** **C**
5. **On an energy graph, the length of vertical lines represents _____.**
**Response:** the amount of released or absorbed energy
**Answer:** **B**
To summarize:
1. C
2. B
3. B
4. C
5. B