Problem 2: A 100-W light bulb is left on for 24 hours. The electricity comes from a coal-burning power plant. Also assume that the conversion of the energy into electricity is 33% efficient. That is, of the total energy obtained from combustion, only 1/3 is converted to electricity. Assume that the burning of coal can be represented by the reaction: C(s) + 02(g) → CO,(g) How much CO2 gas is produced? Express the answer as moles, grams and liters of gas. You may assume that 1 mole of gas occupies 24.5 liters. Problem 3: Look up electricity and natural gas prices on the internet. Use these to compare the cost of energy derived from electricity and natural gas. Assume natural gas is entirely methane (CHa) and that all the energy comes from its combustion. We know that the enthalpy of combustion of methane is 890 kJ.
Problem 2: A 100-W light bulb is left on for 24 hours. The electricity comes from a coal-burning power plant. Also assume that the conversion of the energy into electricity is 33% efficient. That is, of the total energy obtained from combustion, only 1/3 is converted to electricity. Assume that the burning of coal can be represented by the reaction: C(s) + 02(g) → CO,(g) How much CO2 gas is produced? Express the answer as moles, grams and liters of gas. You may assume that 1 mole of gas occupies 24.5 liters. Problem 3: Look up electricity and natural gas prices on the internet. Use these to compare the cost of energy derived from electricity and natural gas. Assume natural gas is entirely methane (CHa) and that all the energy comes from its combustion. We know that the enthalpy of combustion of methane is 890 kJ.
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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![**Problem 2:**
A 100-W light bulb is left on for 24 hours. The electricity comes from a coal-burning power plant. Also assume that the conversion of the energy into electricity is 33% efficient. That is, of the total energy obtained from combustion, only 1/3 is converted to electricity. Assume that the burning of coal can be represented by the reaction:
\[ C(s) + O_2(g) \rightarrow CO_2(g) \]
How much \( CO_2 \) gas is produced? Express the answer as moles, grams, and liters of gas. You may assume that 1 mole of gas occupies 24.5 liters.
---
**Problem 3:**
Look up electricity and natural gas prices on the internet. Use these to compare the cost of energy derived from electricity and natural gas. Assume natural gas is entirely methane (\( CH_4 \)) and that all the energy comes from its combustion. We know that the enthalpy of combustion of methane is 890 kJ.
There are several ways to proceed. Here is one suggestion.
For electricity, you can find the cost per kilowatt-hour. Simply express this as Joules and compare.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Ffcc5d949-8f53-4ec0-8c3e-6a4495e27c79%2F6d056220-14a5-4d3c-aaab-4229ce15e0fe%2Fdjb3d6u_processed.jpeg&w=3840&q=75)
Transcribed Image Text:**Problem 2:**
A 100-W light bulb is left on for 24 hours. The electricity comes from a coal-burning power plant. Also assume that the conversion of the energy into electricity is 33% efficient. That is, of the total energy obtained from combustion, only 1/3 is converted to electricity. Assume that the burning of coal can be represented by the reaction:
\[ C(s) + O_2(g) \rightarrow CO_2(g) \]
How much \( CO_2 \) gas is produced? Express the answer as moles, grams, and liters of gas. You may assume that 1 mole of gas occupies 24.5 liters.
---
**Problem 3:**
Look up electricity and natural gas prices on the internet. Use these to compare the cost of energy derived from electricity and natural gas. Assume natural gas is entirely methane (\( CH_4 \)) and that all the energy comes from its combustion. We know that the enthalpy of combustion of methane is 890 kJ.
There are several ways to proceed. Here is one suggestion.
For electricity, you can find the cost per kilowatt-hour. Simply express this as Joules and compare.
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