Question

An unknown metal cylinder has a mass of 34.3 g and a volume of 2.1 mL . What is the density of the metal in g / m * L ?​

Answer 1

Taking into account the definition of density, the density of the metal is 16.33 $\frac{g}{mL}$.

Definition of density

Density is a quantity that allows us to measure the amount of mass in a certain volume of a substance. Then, the expression for the calculation of density is the quotient between the mass of a body and the volume it occupies:

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

From this expression it can be deduced that density is inversely proportional to volume: the smaller the volume occupied by a given mass, the higher the density.

Density of the metal in this case

In this case, you know that:

• Mass= 34.3 g
• Volume= 2.1 mL

Replacing in the definition of density:

$density=\frac{34.3 g}{2.1 mL}$

Solving:

density= 16.33 $\frac{g}{mL}$

In summary, the density of the metal is 16.33 $\frac{g}{mL}$.

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