Molar Mass. 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.

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Presentation transcript:

Molar Mass

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 g = g = g g g CaCl 2 mol

Molar mass of copper(II) nitrate Cu(NO 3 ) 2 times the N and O 3 by two Cu N O 1 x g = g 2 x g = g 6 x g = g g Cu(NO 3 ) 2 mol

Molar mass of hydrated compound Magnesium chloride hexahydrate MgCl 2 * 6 H 2 O (means there are 6 waters trapped) Mg 1 x g = g Cl 2 x g = g H 12 x g = g O 6 x g = g g MgCl 2 * 6H 2 O mol