Question

A rock has a mass of 30 g and a volume of 15 ml. What is the density? (Round to one decimal place)

Answer 1

Answer:

Density is defined as mass per unit of volume. SInce you know the solid's density and its mass, you can easily solve for its volume by

ρ

=

m

V

⇒

V

=

m

ρ

=

16.0

g

8.0

g

cm

3

=

2.0 cm

3

If you take into account the fact that

1 cm

3

is equal to

1 mL

. the volume of the solid will be

2.0

cm

3

⋅

1 mL

1 cm

3

=

2.0 mL

Since the water has a volume of 4.0 mL, adding the solid will raise the water level in the beaker to

V

total

=

2.0 mL

+

4.0 mL

=

6.0 mL

Therefore, pick a drawing that shows that the total volume in the beaker increased by 50% - from 4.0 mL to 6.0 mL.