Exercises (cont)

7. How many mL of 5.0acid?

_____________________

8. A solution was prepared by adding 920 mg of KCl to a 250-mL flask. The flask was

then filled to the mark with water. What is the percent concentration of the

solution?

_____________________

9. How many grams of Mg3(PO4)2 are needed to prepare 500 mL of a 4.0 mg/dL Mg

standard?

_____________________

10. What amount of Na2SO4.4H2O is needed to make 2.0 liters of a 25.0 mg/dL

Na2SO4 solution?

_____________________

11. How many grams of MgCl2.8H2O are needed to make 250 mL of a 3.00

g/dL MgCl2 solution?

_____________________

MD0837

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