Build your practice set

Find exactly what you need to practice.

Search across chemistry topics, concepts, chapters, and questions.

Viewing Shared Question View All Feed

Stoichiometry Mass–Mass Stoichiometry

1

Choose the best answer

What mass of O₂ is required to react completely with 27 g Al? 4Al + 3O₂ → 2Al₂O₃

Verified Answer & Explanation⌄

Correct Answer: C) 24 g

Concept Explanation

27 g Al = 1 mol Al. 4 mol Al require 3 mol O₂. O₂ required = 3/4 mol = 0.75 mol. Mass = 0.75 × 32 = 24 g.

Topic: Mass–Mass StoichiometryPractice more Mass–Mass Stoichiometry MCQs →