9/11 class notes

Question 1

what is a mole formally

Answer 1

number of atoms in exactly 12g of the ^12C isotope

Question 2

what is Avogadro’s number

Answer 2

6.022 x 10^23

Question 3

molar mass

Answer 3

mass of 1 mole of that substance (g/mol)

Question 4

mass spectrometer

Answer 4

used to separate particles by mass. therefore it can separate isotopes of an element