Question

Calculate the Density of the substances below to determine if they will float or sink in water.

Mass
Volume
Density
Float or Sink
45. Substance 1
90 ml
46. Substance 2
450 grams
35 grams
24 grams
70 ml
47. Substance 3
12 ml

Answer 1

Step-by-step explanation:

If the density of the object is more than that of water, it will sink. Otherwise it will float. The density of water is 1 g/mL.

Substance 1,

Mass, m = 450 g, Volume, V = 90 mL

Density = mass/volume

So,

`d_1=(450)/(90)\\\\=5\ g/mL`

It will sink.

Substance 2,

Mass, m = 35 g, Volume, V = 70 mL

Density = mass/volume

So,

`d_2=(35)/(70)\\\\=0.5\ g/mL`

It will float.

Substance 3,

Mass, m = 24 g, Volume, V = 12 mL

Density = mass/volume

So,

`d_3=(24)/(12)\\\\=2\ g/mL`

It will sink.