Conceptual Physical Science (6th Edition)
6th Edition
ISBN: 9780134060491
Author: Paul G. Hewitt, John A. Suchocki, Leslie A. Hewitt
Publisher: PEARSON
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Textbook Question
Chapter 17, Problem 73E
Exothermic reactions are favored because they release heat to the environment. Would an exothermic reaction be more favored or less favored if it were carried out within a superheated chamber?
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A process that releases heat energy to the surroundings is an __________ reaction, while a pro- cess that can do work is an ______________ reaction.
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QUESTION 7 (Start on a new page.)
The airbags in motor vehicles contain the compound sodium azide (NaNs). When a car
crashes into an object, the compound decomposes and the nitrogen inflates the airbag.
The balanced equation for the reaction is as follows:
NaN(s) → 2Na(s) + 3N2(g)
In one such decomposition, 2,53 x 10° molecules of nitrogen are generated.
Calculate the:
7.1
Number of moles of NaN(s) that decomposed
7.2
Volume of N2(g) produced
Assume that the reaction occurs at standard pressure.
QUESTION 8 (Start on a new page.)
Aluminium sulphate is used as a coagulant in water purification. It reacts with sodium
hydroxide to form aluminium hydroxide which drags the impurities as it settles.
The balanced equation for the reaction is:
Al2(SO4)3(aq) + 6NaOH(aq) → 2Al(OH)3(s) + 3Na2SO4(aq)
A chemist at a water purification plant adds 700 g of Al2(SO4)3 to a sample of water.
8.1
Calculate the maximum mass of Al(OH)3 that can be produced from this
mass of Al2(SO4)3.
(4)
E
[7]
(5)
The…
Chapter 17 Solutions
Conceptual Physical Science (6th Edition)
Ch. 17 - Prob. 1RCQCh. 17 - Prob. 2RCQCh. 17 - Prob. 3RCQCh. 17 - Prob. 4RCQCh. 17 - Why dont equal masses of golf balls and Ping-Pong...Ch. 17 - Why dont equal masses of carbon atoms and oxygen...Ch. 17 - Prob. 7RCQCh. 17 - If you had 1 mole of marbles, how many marbles...Ch. 17 - Prob. 9RCQCh. 17 - How many molecules of water are there in 18g of...
Ch. 17 - Why is saying you have 1 mole of water molecules...Ch. 17 - What is the mass of an oxygen atom in atomic mass...Ch. 17 - Prob. 13RCQCh. 17 - What generally happens to the rate of a chemical...Ch. 17 - Which reactant molecules are the first to pass...Ch. 17 - What term is used to describe the minimum amount...Ch. 17 - What catalyst is effective in the destruction of...Ch. 17 - Prob. 18RCQCh. 17 - What net effect does a chemical reaction have on a...Ch. 17 - Why are catalysts so important to our economy?Ch. 17 - Prob. 21RCQCh. 17 - What is released by an exothermic reaction?Ch. 17 - What is absorbed by an endothermic reaction?Ch. 17 - As energy disperses, where does it go?Ch. 17 - What is always increasing?Ch. 17 - Prob. 26RCQCh. 17 - Show that there are 1.0 1022 carbon atoms in a...Ch. 17 - How many gold atoms are there in a 5.00-g sample...Ch. 17 - Show that 1 mole of KClO3 contains 122.55 g.Ch. 17 - Prob. 35TASCh. 17 - Prob. 36TASCh. 17 - Show that the formula mass of 2-propanol, C3H8O,...Ch. 17 - Prob. 38TASCh. 17 - Prob. 39TASCh. 17 - Prob. 40TASCh. 17 - Prob. 41TASCh. 17 - Prob. 43TARCh. 17 - Rank the following in order of increasing entropy:...Ch. 17 - Prob. 46ECh. 17 - Prob. 47ECh. 17 - Prob. 48ECh. 17 - Prob. 49ECh. 17 - Use the following illustration to answer Exercises...Ch. 17 - Use the following illustration to answer Exercises...Ch. 17 - The reactants shown schematically on the left...Ch. 17 - Prob. 53ECh. 17 - Which has more atoms: 17.031 grams of ammonia,...Ch. 17 - How many moles of molecules are there in each of...Ch. 17 - How many moles of atoms are there in each of the...Ch. 17 - Prob. 58ECh. 17 - Prob. 59ECh. 17 - Which has the greater mass, 1.204 1024 molecules...Ch. 17 - Prob. 61ECh. 17 - How many atoms of arsenic are there in a 145-gram...Ch. 17 - How is it possible for a jet airplane carrying 110...Ch. 17 - In the laboratory, endothermic reactions are...Ch. 17 - Prob. 65ECh. 17 - Why does a glowing splint of wood burn only slowly...Ch. 17 - Prob. 67ECh. 17 - Explain the connection between photosynthetic life...Ch. 17 - Does the ozone pollution from automobiles help...Ch. 17 - Chlorine is put into the atmosphere by volcanoes...Ch. 17 - Prob. 71ECh. 17 - Prob. 72ECh. 17 - Exothermic reactions are favored because they...Ch. 17 - Prob. 74ECh. 17 - Prob. 75ECh. 17 - What role does entropy play in chemical reactions?Ch. 17 - Prob. 77ECh. 17 - Under what conditions will a hot pie not lose heat...Ch. 17 - As the Sun shines on a snow-capped mountain, much...Ch. 17 - Wild plants readily grow all by themselves, yet...Ch. 17 - Prob. 81DQCh. 17 - Prob. 1RATCh. 17 - Which has the greatest number of atoms? (a) 28 g...Ch. 17 - Prob. 4RATCh. 17 - The yeast in bread dough feeds on sugar to produce...Ch. 17 - What can you deduce about the activation energy of...Ch. 17 - What role do CFCs play in the catalytic...Ch. 17 - Prob. 8RATCh. 17 - How much energy, in kilojoules, is released or...Ch. 17 - Prob. 10RAT
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