What is the mass of 1 millimon of ammonia ? Also find the number of ammonia molecules present in it.

Explanation

1 millimol=`10^(-3)mol`
`therefore`Mass of 1 mol of ammonia=17g
`therefore`Mass of `10^(-3)` mol of ammonia `=17xx10^(-3)g`
Again, the number of ammonia molecules present in 1 mol of ammonia=`6.022xx10^(23)`
`therefore` The number of ammonia molecules in `10^(-3)` mol of ammonia`=6.022xx10^(23)xx10^(-3)=6.022xx10^(20)`
Hence, the number of ammonia molecules present in 1 millimon of ammonia=`6.022xx10^(20)`.