B. STOICHIOMETRY Complete the following stoichiometry problems. S 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 (O₂) would react with 0.35 moles of chromium (Cr)? b. Starting with 10.4 g of O₂, how many moles of Cr2O3 can be produced: c. How many grams of Cr metal would be needed to produce 38.2 g of chromium (III) oxide?
B. STOICHIOMETRY Complete the following stoichiometry problems. S 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 (O₂) would react with 0.35 moles of chromium (Cr)? b. Starting with 10.4 g of O₂, how many moles of Cr2O3 can be produced: c. How many grams of Cr metal would be needed to produce 38.2 g of chromium (III) oxide?
Chemistry for Engineering Students
4th Edition
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Lawrence S. Brown, Tom Holme
Chapter4: Stoichiometry
Section: Chapter Questions
Problem 4.70PAE: 4.70 The particulate scale drawing shown depicts the products of a reaction between H2 and O2...
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Transcribed Image Text:B. STOICHIOMETRY
Complete the following stoichiometry problems. St
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 (O₂) would react with 0.35 moles of chromium (Cr)?
b. Starting with 10.4 g of O2, how many moles of Cr2O3 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:
C5H12(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?
6
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