Carlin Chemistry - Unit 6

Unit 6 - Counting by weighing and the mole

Objective 2 - Molar mass and mole calculations

Learning targets:

What is a mole and how is it used in chemistry? What is Avogadro’s number?
How can we determine the molar mass of a substance if we’re given its chemical formula?
Given the mass of a substance, how can we determine 1) the number of moles of the sample and 2) the number of atoms or molecules in the sample?
Given the number of moles of a substance, how can we determine 1) the mass of the sample and 2) the number of atoms or molecules in the sample?
Given the volume of a gas sample at STP, how can we determine 1) the mass of the sample and 2) the number of atoms or molecules in the sample?

Objective 3 - Percent composition

Learning target:

Given the formula of a compound, how can we determine its percent composition?

Objective 4 - Empirical and molecular formulas

Learning targets:

Given data about the % composition of a sample, how can we determine the empirical formula of the compound?
Given the empirical formula and information about the molar mass of the compound, how can we determine the molecular formula?

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