Question

What substance will float on water?

Answer 1

C)soild,density=0.39g/cm³

Explanation:

A substance will float on another if its density is less than that of the other.

To do this for water, we usually compare the relative density of water to that of the substance.

Density is mass per volume of a substance. The unit is given as g/cm³ or kg/m³.

   Density  = $\frac{mass}{volume}$

mass is the amount of substance in a matter and volume is the space occupied by a substance.

  Relative density is the density of a substance compared to that of water;

 

Relative density = $\frac{density of substance }{density of water}$

  Density of water = 1g/cm³

For option c;

  Relative density = $\frac{0.39}{1}$ = 0.39

We see that it has a R.D of less than 1 and it will float.

learn more:

Density brainly.com/question/2690299

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