What is the atomic mass of an atom if its mass is approximately equal to the following?
a. 1/3 that of carbon-12 b. 4.5 times as much as carbon - 12

What is a main difference between a mixture and a pure substance? a mixture is only a liquid, but a pure substance can be in any state.a mixture looks the same throughout, but a pure substance does not.1 a mixture can vary in composition, but a pure substance has a set composlo a mixture can be made up of a single compound, but a pure substance car