A Gas Consists of 85 $\degree$ C Calculate Its Empirical and Molecular Formulas

question 87

Multiple Choice

A gas consists of 85.7 % carbon and 14.3% hydrogen, by weight. A sample of this gas weighing 0.673 g occupies 729 mL at a pressure of 720.0 mmHg and a temperature of 77 $\degree$ C. Calculate its empirical and molecular formulas.

• A) CH, C₂H₂
• B) CH₂, C₂H₄
• C) CH₂, C₃H₆
• D) CH₃, C₂H₆
• E) CH₄, CH₄

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