Topic 13: The Mole, Video B: Avogadro's Number and Molar Mass

Question 1

A mole is a unit that represents 2 things. What are they?

Answer 1

1. Specific number of particles, (atoms molecules), 6.022 x 10^23.

2 A definite and specific mass of a substance. Each element’s atomic mass represents how many grams it has in one mole.

Question 2

How do you find the molecular weight of H20?

Answer 2

You add the atoms weight in the molecule which equals it’s weight (per mole).