Practice Molar Mass in Chemistry

Use these practice problems to test your method after reviewing the concept explanation and worked examples.

Quick Recap

The mass in grams of exactly one mole of a substance, calculated by summing the atomic masses of all atoms in the chemical formula. Molar mass is the essential conversion factor between measurable mass (grams) and countable quantity (moles).

How much one mole weighs. For elements, it's the number on the periodic table.

Example 1

easy
Calculate the molar mass of glucose (\text{C}_6\text{H}_{12}\text{O}_6).

Example 2

medium
What mass of calcium chloride (\text{CaCl}_2) contains 0.75 mol? (Ca = 40.08, Cl = 35.45 g/mol)

Example 3

easy
Calculate the molar mass of sulfuric acid (\text{H}_2\text{SO}_4). (H = 1.008, S = 32.07, O = 16.00)

Example 4

easy
What mass of calcium carbonate (\text{CaCO}_3) is equal to 0.250 mol? (Ca = 40.08, C = 12.01, O = 16.00)
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