1kg = 1/1000g
1 meter = 100 cm
. ". 1 cubic meter = 100 x 100 x100 cubic cm = 10^6 cubic centimeter
.". 1kg per cubic meter = 1/1000 divided by 10^6 gram per cubic centimeter
= 1/1000 gram per...
You can multiply anything by 1 without changing it, a fraction with a numerator that's equal to its denominator equals 1, and common factors between a fraction's numerator and denominator cancel out....