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CHEMISTRY:PRIN.+REACTIONS-OWLV2 ACCESS
8th Edition
ISBN: 9781305079298
Author: Masterton
Publisher: Cengage Learning
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Question
Chapter 21, Problem 72QAP
Interpretation Introduction
Interpretation:
The cost of HF needed to extract gold from the given reaction needs to be compared with the cost of gold formed.
Concept introduction:
Quartz is used to extract gold with HF. Here, the reaction between HF and quartz forms silicon tetrafluoride and water. The balance
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Students have asked these similar questions
Hematite, Fe203, is an important ore of iron. (An ore is a natural
substance from which the metal can be profitably obtained.) The free
metal is obtained by reacting hematite with carbon monoxide, CO, in a
blast furnace. Carbon monoxide is formed in the furnace by partial
combustion of carbon. The reaction is
Fe203(s) + 3CO(g) → 2Fe(s) + 3CO2(g)
How many grams of iron can be produced from 1.17 kg Fe203?
g Fe
22. Copper is obtained from sulfide ores through a two-step process consisting
of roasting the ore in the presence of oxygen and heating the resultant copper(I)
oxide with powdered carbon. The overall reaction is as follows:
2Cu2S (s) + 302 (g) + 2C (s) → 2SO2 (g) + 4Cu (s) + 2CO (g)
Calculate the maximum yield of copper obtained from 1.60 kg of Cu2S.
(Relative atomic mass: S, 32; O, 16; C, 12; Cu, 64)
A. 0.26 kg
В. 0.64 kg
С. 0.96 kg
D. 1.28 kg
write the balanced chemical equation of the reaction , Carbon monoxide reacts with iron ore to form elemental iron and carbon dioxide. There are two main types of ore that maybe used : hematite (Fe2O3) and magnetite (Fe3O4).
Chapter 21 Solutions
CHEMISTRY:PRIN.+REACTIONS-OWLV2 ACCESS
Ch. 21 - Prob. 1QAPCh. 21 - Prob. 2QAPCh. 21 - Prob. 3QAPCh. 21 - Prob. 4QAPCh. 21 - Prob. 5QAPCh. 21 - Prob. 6QAPCh. 21 - Give the formula for the acidic oxide of (a) HNO3...Ch. 21 - Prob. 8QAPCh. 21 - Write the formulas of the following compounds. (a)...Ch. 21 - Prob. 10QAP
Ch. 21 - Prob. 11QAPCh. 21 - Prob. 12QAPCh. 21 - Prob. 13QAPCh. 21 - Prob. 14QAPCh. 21 - Prob. 15QAPCh. 21 - Prob. 16QAPCh. 21 - Prob. 17QAPCh. 21 - Write a balanced net ionic equation for the...Ch. 21 - Prob. 19QAPCh. 21 - Prob. 20QAPCh. 21 - Prob. 21QAPCh. 21 - Prob. 22QAPCh. 21 - Prob. 23QAPCh. 21 - Prob. 24QAPCh. 21 - Prob. 25QAPCh. 21 - Prob. 26QAPCh. 21 - Prob. 27QAPCh. 21 - Prob. 28QAPCh. 21 - Prob. 29QAPCh. 21 - Prob. 30QAPCh. 21 - Prob. 31QAPCh. 21 - Prob. 32QAPCh. 21 - Prob. 33QAPCh. 21 - Prob. 34QAPCh. 21 - The average concentration of bromine (as bromide)...Ch. 21 - Prob. 36QAPCh. 21 - Iodine can be prepared by allowing an aqueous...Ch. 21 - Prob. 38QAPCh. 21 - Prob. 39QAPCh. 21 - Prob. 40QAPCh. 21 - Prob. 41QAPCh. 21 - Prob. 42QAPCh. 21 - Prob. 43QAPCh. 21 - Prob. 44QAPCh. 21 - Prob. 45QAPCh. 21 - Given...Ch. 21 - What is the concentration of fluoride ion in a...Ch. 21 - Calculate the solubility in grams per 100 mL of...Ch. 21 - Prob. 49QAPCh. 21 - Follow the directions for Problem 49 for the...Ch. 21 - Consider the equilibrium system HF(aq)H+(aq)+F(aq)...Ch. 21 - Applying the tables in Appendix 1 to...Ch. 21 - Consider the reaction 4NH3(g)+5O2(g)4NO(g)+6H2O(g)...Ch. 21 - Data are given in Appendix 1 for white phosphorus,...Ch. 21 - Prob. 55QAPCh. 21 - Prob. 56QAPCh. 21 - Sodium hypochlorite is produced by the...Ch. 21 - Prob. 58QAPCh. 21 - Prob. 59QAPCh. 21 - Prob. 60QAPCh. 21 - Consider the reduction of nitrate ion in acidic...Ch. 21 - Prob. 62QAPCh. 21 - Choose the strongest acid from each group. (a)...Ch. 21 - Prob. 64QAPCh. 21 - Prob. 65QAPCh. 21 - Prob. 66QAPCh. 21 - Prob. 67QAPCh. 21 - Prob. 68QAPCh. 21 - Prob. 69QAPCh. 21 - Explain why (a) acid strength increases as the...Ch. 21 - Prob. 71QAPCh. 21 - Prob. 72QAPCh. 21 - The amount of sodium hypochlorite in a bleach...Ch. 21 - Prob. 74QAP
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