Question

TIMED

Answer 1

Density = mass/volume
Density = 81g/0.9cm³
Density = 90g/cm³
: )

Answer 2

Answer : The density of the sample in grams per cubic centimeter is, $90g/cm^3$

Solution : Given,

Mass of unknown sample = 81 g

Volume of unknown sample = $0.9cm^3$

Formula used :

$\text{Density of unknown sample}=\frac{\text{Mass of unknown sample}}{\text{Volume of unknown sample}}$

Now put all the given values in this formula, we get the density of unknown sample.

$\text{Density of unknown sample}=\frac{81g}{0.9cm^3}=90g/cm^3$

Therefore, the density of the sample in grams per cubic centimeter is, $90g/cm^3$