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Activity 1 Molar Mass slide 1

KCl -ionic compound CO2-covalent compound He-element The molar mass of an element is the same as the value of the atomic mass(the decimal number) on the periodic table. It is a blanket term used for atomic mass, formula mass, and molecular mass. Molar mass usually written in units of g/mol.

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Activity 1 Molar Mass slide 1

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  1. KCl-ionic compound • CO2-covalent compound • He-element • The molar mass of an element is the same as the value of the atomic mass(the decimal number) on the periodic table. It is a blanket term used for atomic mass, formula mass, and molecular mass. • Molar mass usually written in units of g/mol. • Molar Mass of Lithium 6.94g/mol. • Use the periodic table to determine the mass of Oxygen. Hint: look at your notes for help on #1 Activity 1 Molar Mass slide 1

  2. Slide 2 The number of atoms in a compound is how many of that element there are in that compound’s formula. For example: N2O5: 2 atoms of Nitrogen and 5 atoms of Oxygen SO3: ____atoms of Sulfur and ___ atoms of Oxygen The molar mass of a compound is the mass of each atom all added together. For example: Molar Mass of N2O5 is: N: 14.01g/mol + 14.01g/mol= 28.02g/mol O: 16.00 g/mol+ 16.00g/mol + 16.00 g/mol+ 16.00 g/mol+ 16.00g/mol =80 g/mol Molar Mass of N2O5 = 28.02 g/mol + 80.02 g/mol = 108.02 g/mol

  3. Activity 1B Use the container of element tiles to determine the Molar mass of each compound.

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