A 4:1 molar mixture of He and CH4 gases is contained in a vessel at 20 bar pressure. Due to a hole in the vessel, the gas mixture leaks out. The ratio of number of moles of He to CH4 in the mixture effusing out initially will be _________.
A
8:1
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B
1:8
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C
1:4
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D
4:1
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Solution
The correct option is A8:1 Option A is correct answer