6)What is molarity of a solution that contains 212.5g of sodium nitrade(NaNO3) in 3 L of solution?

7) I must prepare 300.00 mL of 0.750 m NaBr solution by using 2.00 M NaBr stock solution. how many mL of stock solution should I use?

8)In order to dilute 1.0L of a 6.00M solution of NaOH to 0.500M solution, how much water to add?

9) What is concentration in percent by volume,%(v/v) of the following?
a)60.0 mL of methanol in a total volume of 500 mL
b)25.0 mL of rubbing alcohol (C3H7OH) diluted to a volume of 200.0 mL with water

10) How many grams of solute are needed to prepare:
a) 1.00 L of a 3.00%(m/m) NaCl solution?
b)2.00 L of a 5.00%(m/m)KNO3 solution?