A Sample of an Unknown Volatile Liquid Was Injected into a Dumas

A sample of an unknown volatile liquid was injected into a Dumas flask (m_flask = 27.0928 g, V_flask = 0.1040 L) and heated until no visible traces of the liquid could be found. The flask and its contents were then rapidly cooled and reweighed (m_flask+vapor = 27.4593 g) . The atmospheric pressure and temperature during the experiment were 0.976 atm and 18.0 °C, respectively. The unknown volatile liquid was .

A) C₇H₁₆
B) C₆H₆
C) C₆H₁₂
D) C₇H₁₄
E) C₆H₁₄

Correct Answer:

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