1. How many grams of H3PO4 is needed to prepare 550mL of a 0.31N solution? (assume all H+ enter reaction)
A. 5.6
B. 1.9
C. 1.7
2. Calculate the volume in, mililiters, of a 1.50M NaHCO3 solution that provides 28.0g NaHCO3
A. 500
B. 222
C. 0.222
3. In between 40oC and 50oC, a decrease in temperature will increase the solubility of Na2SO4
True
False
4. Calculate the N of 20g H3PO4 in 500ml of solution (assume all H+ enter solution)
A. 1.2
B. 4.1
C. 2.8
5. Calculate the M of a 4.1m KCl solution if it's density is 1.10g/ml
A. 3.0
B. 29
C. 3.5
6. The mass percent, %(m/m), for 55.0g KOH in 178.0g H2O is:
A. 55
B. 24
C. 178
D. 31