The mass of pure gas to be mixed with 70 g of pure CO so that the partial pressure of CO is equal to the partial pressure of , is

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Question

The mass of pure $	ext{CH}_4$ gas to be mixed with 70 g of pure CO so that the partial pressure of CO is equal to the partial pressure of $	ext{CH}_4$, is

Prashant Kotian · Accepted Answer

Correct answer: A. Equal partial pressures mean equal moles. n(CO) = 70/28 = 2.5 mol. Mass CH4 = 2.5 * 16 = 40 g. Therefore, correct answer is A.

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