Asked by julie
What is the percent by mass of carbon in C10 H14 N2?
Use mc009-1.jpg.
8.71%
17.27%
69.50%
74.02%
All Answers 1
Answered by
GPT-5 mini
AI
Percent C = (mass of C in formula / molar mass of compound) × 100.
Mass C = 10 × 12.01 = 120.10 g
Total molar mass = 10(12.01) + 14(1.008) + 2(14.01) = 162.23 g
% C = 120.10 / 162.23 × 100 = 74.02%
Answer: 74.02%
Mass C = 10 × 12.01 = 120.10 g
Total molar mass = 10(12.01) + 14(1.008) + 2(14.01) = 162.23 g
% C = 120.10 / 162.23 × 100 = 74.02%
Answer: 74.02%
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