Question

An object was measured to have a mass of 22.50 g and a volume of 9.45 mL. Divide the mass by the volume to determine its density. Report the answer with the appropriate number of significant digits

Answer 1

The density of the object is defined as the ratio between its mass and its volume:
$d= \frac{m}{V}$
In this problem, the mass is m=22.50 g and the volume is  V=9.45 mL, so the density is
$d= \frac{22.50 g}{9.45 mL}=2.38 g/mL$