Question

A piece of metal with a mass of 147g and a volume of 21ml. Calculate the density of the metal.

Answer 1

Answer:

density of a piece of metal = 7 gr/ml

Explanation:

See the file please

Answer 2

Answer:

The density of the metal is 7 $\frac{g}{mL}$

Explanation:

Density is a quantity that allows you to measure the amount of mass in a given volume of a substance. The expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:

$density=\frac{mass}{volume}$

Density, according to the International System of Units, is usually expressed in kilogram per cubic meter ($\frac{kg}{m^{3} }$) or gram per cubic centimeter ($\frac{g}{cm^{3} }$). Although it can also be expressed in any other unit of mass by volume.

In this case you know:

• mass= 147 g
• volume= 21 mL

Then:

$density=\frac{147 g}{21 mL}$

density= 7 $\frac{g}{mL}$

The density of the metal is 7 $\frac{g}{mL}$