Question

using the information provided, calculate the density of the solid. round your answer to the correct number of significant figures. volume = 8.5 cm³ mass = 25 g 2.9 g/cm³ 0.34 g/cm³ 210 g/cm³ 2.94 g/cm³

Explanation:

Step1: Recall density formula

The formula for density $
ho$ is $
ho=\frac{m}{V}$, where $m$ is mass and $V$ is volume.

Step2: Substitute given values

Given $m = 25\ g$ and $V=8.5\ cm^{3}$, so $
ho=\frac{25}{8.5}\ g/cm^{3}$.

Step3: Calculate and round

$\frac{25}{8.5}\approx2.941176\ g/cm^{3}$. Rounding to two - significant figures (since 8.5 has two significant figures), we get $
ho = 2.9\ g/cm^{3}$.

Answer:

A. $2.9\ g/cm^{3}$