Mass, moles and Molarity Numerical | Molarity Questions | thetutee

 

Molarity Problems

1. What is the molarity of a solution that was prepared by dissolving 7.8 g of NaNO3 (molar mass = 85.0 g/mol) in enough water to make 500 mL of solution?

 

 

2. What is the molarity of a solution that was prepared by dissolving 32g of CaCl2 (molar mass = 111.1 g/mol) in enough water to make 700 mL of solution?

 

 

3. What is the molarity of a solution that contains 7.5 g of HCl (molar mass = 36.5 g/mol) dissolved in enough water to make 25.35 mL of solution?

 

 

4. How many grams of NaBr (molar mass = 102.9 g/mol) would be needed to prepare 900ml of 0.430 M NaBr solution?