Question

Lithium has a density of 0.5 g/cm³. What would be the mass of a 20 cm³ sample of lithium?

A.0.025 g
B.10 g
C.20 g
D.40 g

Answer 1

B. 10g

Step-by-step explanation:

m=d*v

0.5 g/cm³ /20cm³

10g

cm³ was already used twice therefore (g) is meant for mass

Answer 2

It tells us that lithium has a density of 0.5 g/cm³, and asks us what the mass would be with a volume of 20 cm³.

To calculate the mass, we apply the following formula:

m = d · v

We substitute the exercise data in the given formula:

m = (0,5 g/cm³)·(20 cm³)

m = 10 g

With a sample of 20 cm³, its mass would be 10 grams. Alternative "B".

Skandar