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  4. If the density of a solution is 3.12 g mL-1, the mass of 1.5 mL solution in significant figures is.

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Q. If the density of a solution is $3.12 \,g mL^{-1}$, the mass of $1.5\, mL$ solution in significant figures is_______.

Some Basic Concepts of Chemistry

Solution:

Density $ =\frac{\text{Mass}}{\text{Volume}}$
$\therefore $ Mass = Density $\times$ Volume
$ = 3.12\,g \,mL^{-1} \times 1.5\,mL = 4.68\,g = 4.7\,g$