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Verified Answer & Explanation⌄

Correct Answer: B) 11 u

Concept Explanation

Weighted average mass = (10 × 0.90) + (20 × 0.10) = 11 u.

Topic: Stoichiometry MCQSPractice more Stoichiometry MCQS MCQs →
An element has isotopes of 10 u (90%) and 20… |… | ARMCQS