Question

what is the volume of 80.0 g of ether if the density of ether is 0.70 g/ml?
o 5.6 x 10^1
o 1.1 x 10^2
o 8.0 x 10^1
o 8.8 x 10^-3

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 $V$, so $V = \frac{m}{
ho}$.

Step2: Substitute values

Given $m = 80.0\ g$ and $
ho=0.70\ g/mL$. Then $V=\frac{80.0\ g}{0.70\ g/mL}\approx114.29\ mL$.

Step3: Convert to scientific - notation

$114.29 = 1.1429\times 10^{2}\approx1.1\times 10^{2}\ mL$.

Answer:

$1.1\times 10^{2}$ (corresponding to the second option)