Question

1. the density of tin is 7.31 g/cm³. what is the mass of the sample pictured below?

1.2 cm
5.50 cm
2.5 cm

Explanation:

Step1: Calculate the volume of the sample

The sample is a rectangular - prism. The volume formula for a rectangular - prism is $V = l\times w\times h$, where $l = 5.50$ cm, $w = 2.5$ cm and $h = 1.2$ cm. So $V=5.50\times2.5\times1.2$.
$V = 5.50\times3=16.5$ $cm^{3}$

Step2: Calculate the mass using the density formula

The density formula is $
ho=\frac{m}{V}$, where $
ho = 7.31$ g/$cm^{3}$ and $V = 16.5$ $cm^{3}$. Rearranging for mass $m$, we get $m=
ho\times V$.
$m = 7.31\times16.5$
$m=120.615$ g

Answer:

$120.615$ g