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Question

A gas is present in a 30 litre vessel at 27oC and a pressure of 8.2×1010 atmosphere. The number of molecules in the gas are:

A
6.02×1014
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B
8.2×6×1024
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C
2.46×1010
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D
6.02×1023
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Solution

The correct option is A 6.02×1014
n=PVRT
Number of molecules =n×No
n=8.2×1010×300.082×300=109
Number of molecules =109×6.02×1023=6.02×1014

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