Question

One litre of milk weighs 1.035 kg.the butter fat it contains to the extent of 4% by volume has a density of 875kg/m^3 . find density of the fat fres

Answer 1

875 kg/m^3=0.875 kg/L So the weight of butter

which has in 1 liter a volume of 0.1L is 0.1 *0.875=0.0875 kg 

the remaining 0.9L weighs 1.035 -

0.0875=0.9475kg in a volume of 1-0.1=0.9L 

and density is 0.9475/0.9

=1.053kg/L

Answer 2

Solution ::: density of milk = 1.032kg/l

For butterfat: Volume= 4% of 1 litre

= 4/100 into 1

Density= 865kg/m³

= 865 kg/ 1000 l

So, mass = density into volume...

= 865/100 into 4/100 = 0.746 kg/l