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Which one of the following gases contain...

Which one of the following gases contain the least number of molecukes ? (At Wt of `P = 32, Cl = 35.5, N = 14, O = 16, C = 12, H = 1)`.

A

4.0 g of laughing gas

B

3.0 g of Phosphine

C

2.0 g of marsh gas

D

10.0 g of Phosgene

Text Solution

Verified by Experts

The correct Answer is:
B
No. of molecular `=nxxN`
`"Laughing gas "rarr N_(2)O`
`"Mash gas"rarrCH_(4)`
`"Phosphine"rarr PH_(3)`
`"Phosgene"rarr COCl_(2)`
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