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  • A gas mixture contain 35% He and 65%  by volume at a given temperature and pressure. T

A gas mixture contain 35% He and 65% \mathrm{CH}_4 by volume at a given temperature and pressure. The Percentage by mass of methane in the Mixture?

Option: 1

8 %


Option: 2

0.88 %


Option: 3

0.85 %


Option: 4

0.83 %


Answers (1)

best_answer

\text { Molar mass of the }=4, \mathrm{CH}_4=16

\mathrm{\therefore \text { mass } \% \text { of methane in the mixture } \Rightarrow}

\begin{aligned} & \Rightarrow \frac{65 \times 16}{35 \times 4+65 \times 16} \times 100 \\ & \Rightarrow \frac{1040}{140+1040} \times 100 \end{aligned}

\begin{aligned} & \Rightarrow \frac{1040}{1180} \times 100 \\ & =.88 \% \end{aligned}

Posted by

jitender.kumar

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