1.

Calculate the mass of the following: 2.23 litre of SO_(2) gas at S.T.P

Answer»

Solution :`"Molecular MASS of "SO_(2)=32+(16xx2)`
`=32+32=64`
`"Number of moles of "SO_(2)=("Given volume of "SO_(2)" at S.T.P")/("Molar volume "SO_(2)"at S.T.P")`
`"Number of moles of "SO_(2)=(2.24)/(2.24)="0.1 MOLE"`
`"Number of moles"=("Mass")/("Molecular mass")`
`"Mass"="No. of moles"XX"molecular mass"`
`"Mass"=0.1xx64`
`"Mass of "SO_(2)=6.4g`


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