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The measured density at NTP of He is 0.1...

The measured density at `NTP` of `He` is `0.1784 g L^(-1)`. Calculate the weight of `1 "mole"` of `He`.

A

39.9 g

B

22.4 g

C

3.56 g

D

29 g

Text Solution

Verified by Experts

1 mole occupies a volume of 22.4 L at STP
Mass of 1 mole of gas = Density x Volume
`=1.78xx22.4=39.9g`
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NCERT FINGERTIPS-SOME BASIC CONCEPTS OF CHEMISTRY -Mole Concept And Molecular Masses
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