FOUNDATIONS OF CHEMISTRY

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SoluteFoundations of Chemistry

Where to start

Placement quiz

Ten questions, one per module across the full sequence. Answer honestly — this recommends a starting module based on the first thing you actually miss, not a score to optimize. It's a self-check, not a proctored placement exam, and skimming an earlier module never hurts if something still feels shaky.

1. How many significant figures does 0.004560 have?

2. A metal sample has a mass of 15.0 g and a volume of 5.0 mL. What is its density?

3. An atom has 17 protons and 18 neutrons. What is its mass number?

4. How many moles are in 36.0 g of water (molar mass 18.0 g/mol)?

5. When balanced, what is the coefficient of O₂ in CH₄ + O₂ → CO₂ + H₂O?

6. What is the molarity of a solution made by dissolving 2.0 mol of NaCl in 4.0 L of solution?

7. Which has the higher specific heat capacity: water or iron?

8. Which has more energy per photon: ultraviolet light or infrared light?

9. Which best describes the bonding in NaCl?

10. At constant pressure and moles, if you double a gas's temperature in kelvin, what happens to its volume?