Verified answer

Уксусная кислота.

C₂H₄O₂.

Mr (C₂H₄O₂) = 2 × 12 + 4 × 1 + 2 × 16 = 60.

ω (C) = 24 × 100 ÷ 60 = 40 (%).

ω (H) = 4 × 100 ÷ 60 ≈ 6,7 (%).

ω (O) = 32 × 100 ÷ 60 ≈ 53,3 (%).

Глицерин.

C₃H₈O₃.

Mr (C₃H₈O₃) = 3 × 12 + 8 × 1 + 3 × 16 = 92.

ω (C) = 36 × 100 ÷ 92 ≈ 39,13 (%).

ω (H) = 8 × 100 ÷ 92 ≈ 8,7 (%).

ω (O) = 48 × 100 ÷ 92 ≈ 52,17 (%).