# An irregularly shaped stone was lowered into a graduated cylinder holding a volume of water equal to 2 mL. The height of the water rose to 7 mL. If the mass of the stone was 28 g, what was its density?

Density, $\rho$, is mass per unit volume. $\rho$ $\cong$ $5.5$ $g \cdot m {L}^{- 1}$
$\rho$ $=$ $\frac{28 \cdot g}{5 \cdot m L}$ =??g*mL^(-1)