What is the mass of 1.204 × 10²⁴ molecules of CO₂ (C = 12, O = 16)?
Correct answer A. 88 g
Explanation
Moles = 1.204 × 10²⁴ ÷ 6.02 × 10²³ = 2.0 mol. Mass = 2.0 mol × 44 g mol⁻¹ = 88 g.
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