Walking Science Facts: Practice Quiz

Ten questions pulled at random. Regenerate any time for a fresh set.

1. 1. ΔH(vap) of water is about:

   20 kJ/mol40 kJ/mol4 kJ/mol400 kJ/mol

2. 2. An electron's mass is about:

   10⁻²⁶ kg10⁻¹⁸ kg10⁻³⁰ kg10⁻²³ kg

3. 3. One hydrogen bond is worth about:

   200 kJ/mol400 kJ/mol20 kJ/mol2 kJ/mol

4. 4. Hydrogen's electronegativity is:

   1.04.03.02.2

5. 5. A typical triple bond is worth about:

   400 kJ/mol800 kJ/mol1200 kJ/mol600 kJ/mol

6. 6. Heat capacity of liquid water is about:

   1 J/g°C2 J/g°C4 J/g°C40 J/g°C

7. 7. ΔH(vap) of methanol is closest to:

   35 kJ/mol80 kJ/mol5 kJ/mol400 kJ/mol

8. 8. One mole of ideal gas at STP occupies:

   1 L24.4 L22.4 L2.24 L

9. 9. Heat capacity of ice and water vapor is about:

   2 J/g°C8 J/g°C0.5 J/g°C4 J/g°C

10. 10. Visible light spans about:

    300–700 nm30–70 nm3–7 µm300–700 µm