90 likes | 283 Views
Moles and Molecules. Molar Mass of a Compound. Sum of the average atomic masses of all the atoms represented in a formula Measured in g/mole What is the formula mass of KClO 3 ?. Mole Problems. How many grams are in 2.8 mole of MgCl 2 ? How many grams in 3.0 mole of NaCl?
E N D
Molar Mass of a Compound • Sum of the average atomic masses of all the atoms represented in a formula • Measured in g/mole • What is the formula mass of KClO3?
Mole Problems • How many grams are in 2.8 mole of MgCl2? • How many grams in 3.0 mole of NaCl? • How many grams in .10 mole of carbon dioxide?
Mole Problems • How many moles in 125g of BeS? • How many moles in 450 g of CaCO3? • How many moles in 33.4 g of O2?
Mole Problems • How many molecules in .58 mole of CaCl2? • How many molecules in 3.0 mole of water?
Mole Problems • How many moles is 1.35x1024 molecules of water? • How many moles is 5.6x 1023 molecules of HCl?
Two Steps • How many molecules in 450 g of CaCl2? • What is the mass of 2.5 x 1023 molecules of HBr?