#3: a container has the dimensions of 30 cm x 50 mm x 0.2 m. the density of its contents is 2.5 g/cm3. what is the mass of the s

Question

Vera_Pavlovna [14]

3 years ago

6

#3: a container has the dimensions of 30 cm x 50 mm x 0.2 m. the density of its contents is 2.5 g/cm3. what is the mass of the s

ubstance in kilograms? (d = m/v)

Physics

2 answers:

Dafna11 [192] · Answer 1 · 2021-11-20T11:38:46+03:00

Dafna11 [192]3 years ago

7 0

Answer: m = 3.8

Explanation:

WARRIOR [948] · Answer 2 · 2021-11-20T09:30:04+03:00

Good afternoon!

We calculate the volume of the container in cm³. To do that, we must put the units in cm:

30 cm → 30 cm
50 mm → 5 cm
0.2 m → 20 cm

The volume is:

V = 30 . 5 . 20

V = 3000 cm³

Now, we calculate the mas with the formula:

m = dV

m = 2.5 · 3000

m = 7500 g

Dividing by 1000, we have the mass in kg:

m = 7.5 kg