Use 3 free Unit 07 practice problems to get started. When you want more reps on moles, molar mass, percent composition, and formulas, premium unlocks Quick Sets of 3, Standard Sets of 9, and Extended Sets of 18 from this 81-problem bank.
3 Free Sample Problems
These 3 are a solid starting point if you want to check whether the conversion path feels clear while the setup is still right in front of you.
#4Mole Conversion
How many grams are in 3.50 mol of calcium carbonate (CaCO₃)? (Molar mass = 100.09 g/mol)
#5Avogadro's Number
What does Avogadro's number (6.022 × 10²³) represent?
#6Empirical Formula
A compound contains 40.0% C, 6.7% H, and 53.3% O by mass. What is its empirical formula? (Atomic masses: C = 12.01, H = 1.008, O = 16.00)
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81 practice problems in this unit bank
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