A 0.271-g sample of an unknown vapor occupies 294 mL at 140°C and 847 mmHg. The empirical formula of the compound is CH2. What is the molecular formula of the compound? (R = 0.08206 L • atm/K • mol)
A) CH2
B) C2H4
C) C3H6
D) C4H8
E) C6H12
Correct Answer:
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