Chemistry In Focus
7th Edition
ISBN: 9781337399692
Author: Tro, Nivaldo J.
Publisher: Cengage Learning,
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Chapter 9, Problem 29E
Interpretation Introduction
Interpretation:
The increase in the level of carbon dioxide and the change in temperature is to be discussed.
Concept introduction:
Carbon dioxide is a colorless gas. It is comprised of a carbon atom bonded with two oxygen atoms.
Global warming is caused by the long-term increase in temperature of the Earth. It is very harmful to the environment and also causes problems for plants and animals.
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Consider the following chemical reaction which produces nitric oxide from its constituent elements:
N2 (g) + O2(g) → 2 NO (g) AH = 182.6 kJ/mol
If nitrogen and oxygen were mixed and allowed to react under constant pressure conditions, which of the
following statements must be true?
Select as many answers as applicable however points will be deducted for incorrect guesses.
ο ΔΗ = q
This is an endothermic reaction
The temperature of the surroundings would decrease
The temperature of the surroundings would increase
ο ΔΗ = ΔU
1. A 2.15-gram cashew nut is burned. The heat released raises the temperature of a 100.0-gram sample of water from 18.2°C to 31.5°C. The mass of the nut after the experiment is 1.78 grams. Determine the calorie content of the nut in Calories/gram. Assume that the water is only able to absorb 25% of the heat released by the burning nut. Given 1.00 Calorie=4.18 kJ.
This is another question
2. A large paraffin candle has a mass of 96.83 gram. A metal cup with 100.0 mL of water at 16.2°C absorbs the heat from the burning candle and increases its temperature to 35.7°C. Once the burning is ceased, the temperature of the water was 35.7°C and the paraffin had a mass of 96.14 gram. Determine the heat of combustion of paraffin in kJ/gram. GIVEN: density of water = 1.0 g/mL.
The citizens of the world burn the fossil fuel equivalent of 7 * 1012 kg of petroleum per year. Assume that all of this petroleum is in the form of octane (C8H18) and calculate how much CO2 (in kg) the world produces from fossil fuel combustion per year. (Hint: Begin by writing a balanced equation for the combustion of octane.) If the atmosphere currently contains approximately3 * 1015 kg of CO2, how long will it take for the world’s fossil fuel combustion to double the amount of atmospheric carbon dioxide?
Chapter 9 Solutions
Chemistry In Focus
Ch. 9 - Conversion of Energy Units The complete combustion...Ch. 9 - Calculating Energy Use in Kilowatt-Hours What is...Ch. 9 - Prob. 9.3YTCh. 9 - Enthalpy of Reaction How much energy in...Ch. 9 - Prob. 9.5YTCh. 9 - Prob. 1SCCh. 9 - The second law of thermodynamics is sometimes...Ch. 9 - Prob. 3SCCh. 9 - Prob. 4SCCh. 9 - When two solutions are mixed in a beaker, a...
Ch. 9 - Prob. 1ECh. 9 - From a molecular standpoint, explain how thermal...Ch. 9 - Prob. 3ECh. 9 - Prob. 4ECh. 9 - Prob. 5ECh. 9 - Explain the first law of thermodynamics and its...Ch. 9 - What is entropy? Why is entropy important?Ch. 9 - Explain the second law of thermodynamics and its...Ch. 9 - Prob. 9ECh. 9 - Prob. 10ECh. 9 - Define each of the following terms: a. heat b....Ch. 9 - Prob. 12ECh. 9 - What happens to the temperature of the...Ch. 9 - Prob. 14ECh. 9 - Prob. 15ECh. 9 - Prob. 16ECh. 9 - Prob. 17ECh. 9 - Prob. 18ECh. 9 - Prob. 19ECh. 9 - What are the environmental problems associated...Ch. 9 - Prob. 21ECh. 9 - Prob. 22ECh. 9 - What is the major cause of acid rain?Ch. 9 - Explain how acid rain is formed and its effects on...Ch. 9 - Prob. 25ECh. 9 - Prob. 26ECh. 9 - Prob. 27ECh. 9 - Prob. 28ECh. 9 - Prob. 29ECh. 9 - Which fossil fuel is the worst offender when it...Ch. 9 - Prob. 31ECh. 9 - Prob. 32ECh. 9 - Prob. 33ECh. 9 - Prob. 34ECh. 9 - Assume that electricity costs 15 cents per...Ch. 9 - Prob. 36ECh. 9 - Prob. 37ECh. 9 - Prob. 38ECh. 9 - The coldest temperature ever measured in the...Ch. 9 - The warmest temperature ever measured in the...Ch. 9 - Chemical Reactions and Energy Calculate the amount...Ch. 9 - Prob. 42ECh. 9 - Prob. 43ECh. 9 - Prob. 44ECh. 9 - Prob. 45ECh. 9 - Prob. 46ECh. 9 - Prob. 47ECh. 9 - Prob. 48ECh. 9 - Calculate the amount of carbon dioxide (in kg)...Ch. 9 - Prob. 50ECh. 9 - The second law of thermodynamics has been called...Ch. 9 - You are camping and contemplating placing some hot...Ch. 9 - Prob. 56ECh. 9 - Prob. 57ECh. 9 - Prob. 58E
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