B. STOICHIOMETRYComplete the following stoichiometry problems. StEquations and Mole-to-Mole Relationships1. 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 Yield2. 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 thelimiting reactant?6

Answered: B. STOICHIOMETRY Complete the following…

Chemistry

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ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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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

Expert Solution

Step 1: Determine the moles of oxygen from the given data:

"Since you have posted multiple questions with multiple sub parts, we will provide the solution only to the first three sub parts of the first question as per our Q&A guidelines. Please repost the remaining question by specifying the sub parts needed to the answer."

Given,

The reaction:

$4 space C r subscript left parenthesis s right parenthesis end subscript space plus space 3 space O subscript 2 space left parenthesis g right parenthesis end subscript space rightwards arrow space 2 space C r subscript 2 O subscript 3 space left parenthesis s right parenthesis end subscript$

a. moles of Cr = 0.35 mol

b. mass of O₂ = 10.4 g

c. mass of Cr₂ = 38.2 g

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