Keys to Old Tests

I will try to put some of the keys here during the semester.

Test 1

1.) 113 mL

2.) 1.51 x 10⁵ L

3.) 34.0 g/mol

4. 130. (3 sig figs)

5. Ptotal = 16.6 atm, PP(H₂) = 14 atm, PP(Ar) = 2.6 atm

6. 62.9 (63 for 2 sig figs) g/mol

7. size and intermolecular forces

8. Size is negligible so Ar same size as CH<sub>4</sub> and no intermolecular forces exist between chemical species.

9.b is for size and a is for intermolecular forces

10. HW problem 46 at end of chapter 12.