Question

An object with a density of 3.7kg/m^3 has a mass of 2.5g. What's the volume in mL?

Answer 1

$d=3,7\frac{kg}{m^{3}}=3,7\frac{1000g}{1000000mL}=0,0037\frac{g}{mL}\\ m=2,5g\\\\ d=\frac{m}{V} \ \ |*V\\ dV=m \ \ |:d\\ V=\frac{m}{d}=\frac{2,5g}{0,0037\frac{g}{mL}}\approx 675,68mL$