Question

a sample of a brass alloy has a density of 8.60 grams per milliliter. if the sample has a volume of 2.00 milliliters, what is the mass, in grams, of the sample?
(a) 0.23
(b) 8.60
(c) 10.6
(d) 17.2

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 want to find $m$, so we can re - arrange the formula to $m =
ho\times V$.

Step2: Substitute given values

Given $
ho = 8.60$ g/mL and $V=2.00$ mL. Substitute these values into the formula: $m=8.60\times2.00$.

Step3: Calculate the mass

$m = 17.2$ g

Answer:

D. 17.2