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A 0.677 g sample of an unknown gas occupies 294 mL at 140.C and 847 mmHg. The empirical formula of the compound is CH2 What

A 0.677 g sample of an unknown gas 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? O A C4H8 OBC3H6 OD CH10

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