Activity 2

1. Atomic mass is the total mass of protons, neutrons and electrons in a single atom when the atom is motionless. Mass of 1 mole of atoms.
2. A dozen can be remembered as a dozen of eggs which equals 12.
3. A case equals 24- you can remember this by a 24 case of pop.
4. A gross is a dozen dozen.. equals 144
5. A mole is the amount of a chemical substance that contains 6.02 x 10^23 formula units of the substance.
6. How many plant earths are needed to have a mole of people? There are rougly 6 billion people on plant earth and a mole equals 6.02 x 10^23 so you would take 6.02 x 10^23 divided by 6 x 10^9 (because 6 billion people on earth) and get 1.003 x 10^14.