1. Molar Mass

2. \ Molar Mass
The mass of 1 mole of an element or compound Atomic mass has the units amu and is the color RED on the periodic table. The RED numbers are also the molar mass. Its units are g (grams) *molar mass = atomic mass *round to the nearest hundredth using mass from the periodic table!!

3. For an Element
Take the element Carbon (C) Molar mass = 12.01g 1 mol of C = 12.01g How about Boron (B)? Molar mass =
10.81g

4. What is the molar mass of:
C8H11NO2 magnesium phosphate
Mg3(PO4)2

5. Calculate the mass in grams of 0.0450 moles of chromium (Cr).
Example 8
Calculate the mass in grams of moles of chromium (Cr).

6. Example 9
What is the mass of 4.35 moles of sulfuric acid, H2SO4?

7. Example 10
Calculate the number of moles of 321 g of lead (II) chloride.

8. Example 11
How many formula units are in 124 g of mercury(II) chloride?

9. Example 12
What is the mass in grams in 1.50 x 1015 molecules of sulfur dioxide?

10. Example 13a
A sample of aluminum chloride has a mass of 35.6 g. a. How many moles of chloride ions are present?

11. Example 13b
A sample of aluminum chloride has a mass of 35.6 g. b. How many chloride ions are present?

12. Example 14
How many oxygen atoms are in 37.5 grams of SO3?