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1. For the following reaction: 4 Cr(s) + 3 O₂(g) → 2 Cr₂O3(s) a. How many moles of oxygen (O₂) would react with 0.35 moles of chromium (Cr)? b. Starting with 10.4 g of O₂, how many moles of Cr203 can be produced: C. How many grams of Cr metal would be needed to produce 38.2 g of chromium (III) oxide?

1. For the following reaction: 4 Cr(s) + 3 O₂(g) → 2 Cr₂O3(s) a. How many moles of oxygen (O₂) would react with 0.35 moles of chromium (Cr)? b. Starting with 10.4 g of O₂, how many moles of Cr203 can be produced: C. How many grams of Cr metal would be needed to produce 38.2 g of chromium (III) oxide?

World of Chemistry, 3rd edition
World of Chemistry, 3rd edition
3rd Edition
ISBN:9781133109655
Author:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan L. Zumdahl, Donald J. DeCoste
Chapter9: Chemical Quantities
Section: Chapter Questions
Problem 59A
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1 a.b.c only
B. STOICHIOMETRY Complete the following stoichiometry problems. Show ALL of your work to receive full credit. Equations and Mole-to-Mole Relationships 1. For the following reaction: 4 Cr(s) + 3 O₂(g) → 2 Cr₂O3(s) a. How many moles of oxygen (0₂) would react with 0.35 moles of chromium (Cr)? b. Starting with 10.4 g of Oz, how many moles of Cr203 can be produced: c. How many grams of Cr metal would be needed to produce 38.2 g of chromium (III) oxide? Limiting Reactant, Theoretical Yield and Percent Yield 2. Pentane combusts with oxygen to form carbon dioxide and water by the following reaction: CsH12 (1) +8 O2(g) → 5 CO₂(g) + 6 H₂O(g) a. If 0.111 moles of pentane (C5H12) is mixed with 0.313 moles of oxygen (O₂), which is the limiting reactant?
Transcribed Image Text:B. STOICHIOMETRY Complete the following stoichiometry problems. Show ALL of your work to receive full credit. Equations and Mole-to-Mole Relationships 1. For the following reaction: 4 Cr(s) + 3 O₂(g) → 2 Cr₂O3(s) a. How many moles of oxygen (0₂) would react with 0.35 moles of chromium (Cr)? b. Starting with 10.4 g of Oz, how many moles of Cr203 can be produced: c. How many grams of Cr metal would be needed to produce 38.2 g of chromium (III) oxide? Limiting Reactant, Theoretical Yield and Percent Yield 2. Pentane combusts with oxygen to form carbon dioxide and water by the following reaction: CsH12 (1) +8 O2(g) → 5 CO₂(g) + 6 H₂O(g) a. If 0.111 moles of pentane (C5H12) is mixed with 0.313 moles of oxygen (O₂), which is the limiting reactant?
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