1. Molar Mass

2. How to find the molar mass of a compound. 1. Write the correct formula: Calcium chloride, CaCl 2 2. List all individual elements 3. Determine the number of type 4.Times by the molar mass 5.Add them up and label Ca Cl 1212 40.08 g = 35.45 g = 40.08 g 70.90 g 110.98 g CaCl 2 mol

3. Molar mass of copper(II) nitrate Cu(NO 3 ) 2 times the N and O 3 by two Cu N O 1 x 63.55 g = 63.55 g 2 x 14.01 g = 28.02 g 6 x 16.00 g = 96.00 g 187.6 g Cu(NO 3 ) 2 mol

4. Molar mass of hydrated compound Magnesium chloride hexahydrate MgCl 2 * 6 H 2 O (means there are 6 waters trapped) Mg 1 x 24.31 g = 24.31 g Cl 2 x 35.45 g = 70.90 g H 12 x 1.008 g = 12.096 g O 6 x 16.00 g = 96.00 g 203.3 g MgCl 2 * 6H 2 O mol