1.

Calculate the mass of 18.069xx10^(23) molecules of SO_(2)

Answer»

Solution :`"Mass of the SUBSTANCE"=("Gram molecular mass"XX"NUMBER of particles")/("AVOGADRO number")`
Gram molecular mass of `SO_(2)=32+16(2)=64G`
`"Mass of "SO_(2)=(64xx18.069xx10^(23))/(6.023xx10^(23))`
`=64xx3=192g`


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