Question

what is the mass of an object with a density of 15 g/ml and a volume of 3 ml

Answer 1

it is given that , density of object is 15 g/ml

and volume of that object is 3ml

we know,

mass of object = density of that object × volume of that object

= 15g/ml × 3ml

= 45g


hence, mass of the object is 45g

Answer 2

Answer:  The mass of the object is 45 g.

Explanation:

1 g/ml = 1000 g/l

so

15 g/ml = 15 (1000 g/l)

15 g/ml = 15000 g/l

⇒   Density = 15000 g/l

Also

Volume = 3 ml = 3 (1/1000) l = 0.003 l

So

⇒   Volume = 0.003 l

Now

Mass = Density . Volume

m     =             p . v

Mass = (15000 g/l)(0.003)

⇒   Mass = 45 g