Question

bromine is a reddish brown liquid. calculate its density if 421.2 g of the substance occupies 135. ml. be sure your answer has the correct number of significant figures.

Explanation:

Step1: Recall density formula

Density ($
ho$) is given by $
ho=\frac{m}{V}$, where $m$ is mass and $V$ is volume.

Step2: Substitute values

Here, $m = 421.2\ g$ and $V=135\ mL$. So, $
ho=\frac{421.2}{135}$.

Step3: Calculate density

$
ho=\frac{421.2}{135}\approx3.12\ g/mL$ (rounded to three - significant figures as 135 has three significant figures).

Answer:

$3.12$