Answer
When mass=250 mg, V= 0.178 $cm^{3}$.
When mass= 500 lb, V= $1.62\times10^{5}$ $cm^{3}$.
Work Step by Step
Density= $\frac{Mass}{Volume}$
Or Volume=$\frac{Mass}{Density}$.
Given that, Density= 1.40 $g/cm^{3}$
When mass of the tablet is 250 mg,
Volume= $\frac{250\times10^{-3}g}{1.40 g/cm^{3}}= 0.178 cm^{3}$.
When mass of the tablet is 500 lb,
Volume=$\frac{500 lb}{1.40g/cm^{3}}\times\frac{453.59g}{1 lb}=1.62\times10^{5}cm^{3}$
