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A gas mixture contains 50% helium and 50...

A gas mixture contains `50%` helium and `50%` methane by volume. What is the percent by weight of methane in the mixture.

A

`19.97%`

B

`20.05%`

C

`50%`

D

`80.03%`

Text Solution

Verified by Experts

Solution contain `He +CH_(4)`
Their mol. `wt = 4+16 = 20`
`%`wt of `CH_(4) = (" wt of " CH_(4))/(" Total wt") xx 100 = 16/20 xx 100 = 80.0%`
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