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112L CO2, and 88g CO2, at STP is given ...

112L `CO_2`, and 88g `CO_2`, at STP is given
(Atomic mass C-12, 0-16, N-14, H-1)
a) Calculate the number of molecules in sample..

Text Solution

Verified by Experts

No. of moles =`(Volume at STP/Molar volume)`
`=(112 litre / 22.4 litre) = 5mole`
b) Mass of `NH_3` sanple = 85g
Molecular mass of `NH_3`
`= (14 xx 1) + ( 1 xx 3) =17`
No. of moles =`(85g/17g) = 5moles`
Volume at STP
= `no. of moles xx 22.4`
`= 5 xx 22.4 = 112 litre`
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