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31 votes
2. How many moles of Hydrogen gas are needed to produce 4 moles of water?

2 H2(g) + 1 O2(g) → 2 H2O(l)

User Myplacedk
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1 Answer

18 votes
18 votes

Answer:

4 mol H₂

General Formulas and Concepts:

Atomic Structure

  • Reading a Periodic Table
  • Moles

Aqueous Solutions

  • States of matter

Stoichiometry

  • Using Dimensional Analysis
  • Analyzing reactions RxN

Step-by-step explanation:

Step 1: Define

[RxN - Balanced] 2H₂ (g) + O₂ (g) → 2H₂O (l)

[Given] 4 mol H₂O

[Given] mol H₂

Step 2: Identify Conversions

[RxN] 2 mol H₂ (g) → 2 mol H₂O (l)

Step 3: Stoichiometry

  1. [DA] Set up conversion:
    image
  2. [DA] Multiply [Cancel out units]:
    image
User Seth Tisue
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