Question

1. if an object has a density of 2.5 g/cm^3 and a volume of 40 cm^3, what is its mass?

Explanation:

Step1: Recall density formula

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

Step2: Substitute given values

Given $
ho = 2.5\ g/cm^{3}$ and $V=40\ cm^{3}$. Substitute these values into the formula $m=
ho\times V$. So $m = 2.5\ g/cm^{3}\times40\ cm^{3}$.

Step3: Calculate the mass

$m=2.5\times40\ g=100\ g$.

Answer:

$100\ g$