Basic Chemistry (5th Edition)
5th Edition
ISBN: 9780134138046
Author: Karen C. Timberlake
Publisher: PEARSON
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Chapter 9, Problem 9.70AQAP
The equation for the reaction of iron and oxygen gas to form rust
- How many kilojoules are released when 2.00 g of
- How many grams of rust form when 150 kJ are released?
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The equation for the reaction of iron and oxygen gas to form rust (Fe2O3)(Fe2O3) is written as4Fe(s)+3O2(g)→2Fe2O3(s)ΔH=1.7×103kJ
How many grams of rust form when 300 kJkJ are released?
How many kilojoules are released when 2.10 gg of FeFe reacts?
2. Calcium carbide, CaC2, is the raw material for the production of acetylene (used in welding torches). Calcium carbide is produced by reacting calcium oxide with carbon. Carbon monoxide is also produced in this reaction. When one mole of calcium carbide is formed, 464.8 kJ is absorbed
(a) Write a thermochemical equation for this reaction.(b) Is the reaction exothermic or endothermic?(c) What is ΔH when 1.00 g of CaC2(s) is formed?(d) How many grams of carbon must react to produce 3.03x103 kJ of heat?
Deterioration of buildings, bridges, and other structures through the rusting of iron costs millions of dollars every day. Although the actual process also requires water, a simplified equation (with rust shown as Fe2O3) is:
4 Fe(s) + 3 O2(g) → 2 Fe2O3(s)
ΔHrxn = −1.65 ×103 kJ
(a) What is the ΔHrxn when 0.250 kg of iron rusts
(b) How much rust forms when 4.20 × 103 kJ of heat is released?
Chapter 9 Solutions
Basic Chemistry (5th Edition)
Ch. 9.1 - Calculate the total mass of the reactants and the...Ch. 9.1 - Calculate the total mass of the reactants and the...Ch. 9.2 - 9.3 Write all of the mole-mole factors for each of...Ch. 9.2 - Prob. 9.4QAPCh. 9.2 - Prob. 9.5QAPCh. 9.2 - Prob. 9.6QAPCh. 9.2 - Prob. 9.7QAPCh. 9.2 - Ammonia is produced by the reaction of nitrogen...Ch. 9.2 - Prob. 9.9QAPCh. 9.2 - Prob. 9.10QAP
Ch. 9.3 - Sodium reacts with oxygen to produce sodium oxide....Ch. 9.3 - Nitrogen gas reacts with hydrogen gas to produce...Ch. 9.3 - Prob. 9.13QAPCh. 9.3 - lron (III) oxide reacts with carbon to give iron...Ch. 9.3 - Nitrogen dioxide and water react to produce nitric...Ch. 9.3 - Calcium cyanamide, CaCN2 , reacts with water to...Ch. 9.3 - When solid lead(II) sulfide reacts with oxygen...Ch. 9.3 - When the gases dihydrogen sulfide and oxygen...Ch. 9.4 - Prob. 9.19QAPCh. 9.4 - A clock maker has 15 clock faces. Each clock...Ch. 9.4 - Prob. 9.21QAPCh. 9.4 - Prob. 9.22QAPCh. 9.4 - 9.23 For each of the following reactions, 20.0 g...Ch. 9.4 - For each of the following reactions. 20.0 g of...Ch. 9.4 - Prob. 9.25QAPCh. 9.4 - Prob. 9.26QAPCh. 9.5 - 9.27 Carbon disulfide is produced by the reaction...Ch. 9.5 - Prob. 9.28QAPCh. 9.5 - Prob. 9.29QAPCh. 9.5 - Prob. 9.30QAPCh. 9.5 - Prob. 9.31QAPCh. 9.5 - Prob. 9.32QAPCh. 9.6 - In an exothermic reaction, is the energy of the...Ch. 9.6 - Prob. 9.34QAPCh. 9.6 - Prob. 9.35QAPCh. 9.6 - Classify each of the following as exothermic or...Ch. 9.6 - Prob. 9.37QAPCh. 9.6 - Prob. 9.38QAPCh. 9.6 - Prob. 9.39QAPCh. 9.6 - Prob. 9.40QAPCh. 9.6 - Prob. 9.41QAPCh. 9.6 - Calculate the enthalpy change for the reaction...Ch. 9.6 - Prob. 9.43QAPCh. 9.6 - Prob. 9.44QAPCh. 9 - Prob. 9.45FUCh. 9 - Prob. 9.46FUCh. 9 - Prob. 9.47UTCCh. 9 - Prob. 9.48UTCCh. 9 - Prob. 9.49UTCCh. 9 - Prob. 9.50UTCCh. 9 - Prob. 9.51UTCCh. 9 - If green spheres represent chlorine atoms and red...Ch. 9 - Prob. 9.53UTCCh. 9 - Prob. 9.54UTCCh. 9 - When ammonia NH3 reacts with fluorine F2 , the...Ch. 9 - Gasohol is a fuel that contains ethanol C2H6O that...Ch. 9 - When hydrogen peroxide H2O2 is used in rocket...Ch. 9 - Propane gas, C3H8 , reacts with oxygen to produce...Ch. 9 - When 12.8 g of Na and 10.2 g of Cl2 react, what is...Ch. 9 - If 35.8 g of CH4 and 75.5 g of S react, how many...Ch. 9 - Pentane gas, C5H12 , reacts with oxygen to produce...Ch. 9 - When nitrogen dioxide NO2 from car exhaust...Ch. 9 - The gaseous hydrocarbon acetylene, C2H2 , used in...Ch. 9 - The equation for the decomposition of potassium...Ch. 9 - When 28.0 g of acetylene reacts with hydrogen....Ch. 9 - When 50.0 g of iron(III) oxide reacts with carbon...Ch. 9 - Nitrogen and hydrogen combine to form ammonia....Ch. 9 - Prob. 9.68AQAPCh. 9 - The equation for the reaction of nitrogen and...Ch. 9 - The equation for the reaction of iron and oxygen...Ch. 9 - Each of the following is a reaction that occurs in...Ch. 9 - Each of the following is a reaction that occurs in...Ch. 9 - Prob. 9.73CQCh. 9 - Prob. 9.74CQCh. 9 - Prob. 9.75CQCh. 9 - Prob. 9.76CQCh. 9 - Prob. 9.77CQCh. 9 - Prob. 9.78CQCh. 9 - Prob. 9.79CQCh. 9 - Prob. 9.80CQCh. 9 - Prob. 9.81CQCh. 9 - Prob. 9.82CQ
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