FINAL EXAM REVIEW

1. Calculate the mass of solute needed to prepare each 350 mL of 1.8 M NaOH solution.
2. What volume ( mL ) of a 4.0 M solution of HCl contains 12 g of solute?
3. A gas sample with a volume of 730 mL and pressure of 830 mmHg is at a temperature of . How many moles of gas does this sample contain?
4. How many grams of nitrogen gas has the same volume as 120 g of Ar gas at the same temperature and pressure?
5. If 75 mL of water is added to 120 mL of a 0.15 M NaOH solution, what will be the molarity of the final solution?
6. What volume (L) of 0.05 M HCl solution can be prepared by diluting 250 mL of 10 M HCl ?
7. 350 mL of a 1.5 M NaCl solution is heated until the volume is reduced to 250 mL . What is the molarity of this solution?
8. How many grams of are needed to produce 250 L of gas at a temperature of and a pressure of 752 mmHg ?

9. Calculate the molar mass of a gas if 2.68 g of the gas occupies 2.00 L at and 764 mmHg .
10. A mixture of 11 g of . And 8.0 g of and an undetermined amount of occupies a volume of 22.4 L at 760 mmHg and . What mass of is present in this mixture?
11. What is the volume occupied by 35.4 g of nitrogen gas at and 735 mmHg ?
12. Write the symbols of the ions and formulas for their ionic compounds using the electron configurations give in the table below:

ANSWERS:

1. 25 g
2. 82 mL
3. 0.032 mol
4. 84 g
5. 0.092 M
6. 50 L
7. 2.1 M
8. 160 g
10. 1.0 g
11. 33.0 L