What volume of alcohol with a density of 8.4 x 102kgm-3 will have the same mass as 4.2m3of petrol whose density is 7.2 x 102kgm-3?
-
A.
14m3 -
B.
3.6m3 -
C.
4.9m3 -
D.
5.0m3 -
E.
5.8m3
Correct Answer: Option B
Explanation
Mass = Density x Volume
4.2 x 7.2 x 102 = v x 8.4 x 102
= 3.6m3