One litre of an unknown gas weighs 1.25 gram at ntp which of the following gas Britain's to the above data

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One litre of an unknown gas weighs 1.25 gram at ntp which of the following gas Britain's to the above data

Himanshu Singla 4th Aug, 2019

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Answer (1)

kartikjain2548 Student Expert 4th Aug, 2019

Answer:N2

Explanation: At NTP

22.4 litre is required for 1 mol

Hence 1 litre can make 1÷22.4 mol

Now number of moles = 1÷22.4

Number of moles=

molecular mass÷molar mass

ie, n= m÷ M

Hence M= m÷n

= 1.25÷(1÷22.4)

= 28 g

Answer is N2

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