Question

If a sample of 18 metal marbles has a total volume of 21.0 mL and a total mass of 20.7 grams, what is the density of the metal marbles?

Answer 1

density measured in grams per volume so density = 20.7/21 = 0.986 g/mL

Answer 2

.98
`(gm)/(ml)`

Explanation:

The density of any object is calculated by the formula:

Density=
`(mass)/(volume)`

In this case the Mass is 20.7 grams, and the volume is 21 ml, what you have to do now is just put the values in the formula and do the division:

D=
`(20.7)/(21)`

The division will be equal to:

D=
`(20.7)/(21)`= .98
`(gm)/(ml)`