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  4. 18.72 g of a substance 'X' occupies 1.81 cm3. What will be its density measured in correct significant figures?

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Q. $18.72\, g$ of a substance $'X'$ occupies $1.81 \,cm^3$. What will be its density measured in correct significant figures?

Some Basic Concepts of Chemistry

Solution:

Density $= \frac{\text{Mass}}{\text{Volume}} $
$= \frac{18.72}{1.81} $
$ = 1.34 \,g\, cm^{-3}$
Since volume contains $3$ significant figures hence answer will be $10.3 \,g\, cm^{-3}$