Question

156 g sample of steel has a volume of 20.0 mL. what is the density of the steel sample

Answer 1

Hey there! :

Mass = 156 g

Volume = 20.0 mL

Therefore:

Density  = mass / volume

Density = 156 / 20.0

Density = 7.8 g/mL

Answer 2

Answer:

The density is:

$D=7.8\frac{g}{mL}$

Explanation:

We have the mass and the volume of steel,

$m=156g\\V= 20 mL$

The density formula is:

$D=\frac{m}{V}$(1)

We can replace the mass and the volume in the equation (1) to find the density:

$D=\frac{156g}{20mL}\\ D= 7.8 \frac{g}{mL}$