Question

a lead pellet has a volume of 1.2×10⁻² ml (0.012 ml) and a density of 11.3 g/ml. what is the mass of the lead pellet?

Explanation:

Step1: Recall density - mass - volume formula

The formula for density $
ho=\frac{m}{V}$, where $
ho$ is density, $m$ is mass and $V$ is volume. We need to solve for $m$, so $m =
ho\times V$.

Step2: Substitute given values

Given $
ho = 11.3\ g/mL$ and $V=1.2\times 10^{- 2}\ mL$. Then $m=(11.3\ g/mL)\times(1.2\times 10^{-2}\ mL)$.

Step3: Calculate the mass

$m = 11.3\times1.2\times10^{-2}\ g=0.1356\ g$.

Answer:

$0.1356\ g$