1. What volume of 17.4 M HCl should be used to prepare 500 mL of a 6.00 M solution of HCl?
A. 1450 mL
B. 209 mL
C. 0.209 mL
D. 172 mL
E. 2.9 mL
2. A student removes 25 mL of 3.0 M NaOH and dilutes it to a final volume of 350 mL. What is the concentration of the resulting solution.?
A. 42 M
B. 0.024 M
C. 75 M
D. 0.10 M
E. 0.21 M
3. How many moles of Na2SO4are required to make a solution with a concentration of 0.35 M Na+ions?
A. 0.35 M
B. 0. 18 M
C. 0.12 M
D. 1.1 M
E. 0.70 M
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