1. LECTURE 4.3 – MOLAR MASS

2. Today’s Learning Targets
LT 3.7 – I can calculate the molar mass of given element or compound.
LT 3.8 – Given an element, I can convert between the number of moles to grams and grams back to moles

3. What is molar mass?

4. I. Molar Mass
Molar mass is the mass, in grams, of 1 mole of substance.
The molar mass is the mass listed on the periodic table
Units of Molar mass are g/mol
Molar Mass

5. How do we calculate molar mass?

6. More Tables! = = = x x x Element Number of Atoms in Compound
Molar Mass
Total Element Molar Mass
Total Molar Mass x = x = x =

7. Class Examples
CaBr2
Ca3(PO4)2

8. Table Talk Calculate the molar mass for the following compounds: KCN
Ca(NO3)2
Al2(SO4)3