Question

1. if the density of 45.0 cm³ block of wood is 0.65 g/ml calculate the woods mass.

Explanation:

Step1: Use the density formula

Density formula is $
ho=\frac{m}{V}$, where $
ho$ is density, $m$ is mass and $V$ is volume. We need to find $m$, so we can rewrite the formula as $m =
ho\times V$.

Step2: Substitute the given values

Given that $
ho=0.65\ g/ml$ and $V = 45.0\ cm^{3}$. Since $1\ cm^{3}=1\ ml$, then $V = 45.0\ ml$.
Substitute into $m=
ho\times V$: $m=0.65\ g/ml\times45.0\ ml$.

Step3: Calculate the mass

$m = 0.65\times45.0=29.25\ g$

Answer:

$29.25\ g$