Question

the following shows an experiment used to determine the density of a gas. the evacuated bulb has a volume of 100.0 ml. it was weighed, filled with the gas, and weighed again. determine the density of the gas. be sure your answer has the correct number of significant figures.

Explanation:

Step1: Calculate mass of the gas

The mass of the gas is the difference between the mass of the bulb - filled with gas and the mass of the evacuated bulb. So, $m = 260.35\ g-259.71\ g = 0.64\ g$.

Step2: Use density formula

The density formula is $
ho=\frac{m}{V}$, where $m$ is mass and $V$ is volume. Given $V = 100.0\ mL$ and $m = 0.64\ g$. Then $
ho=\frac{0.64\ g}{100.0\ mL}=0.0064\ g/mL$.

Answer:

$0.0064\ g/mL$