Molarity and Dilution Calculations

What would the molarity of a solution be if you took 10 mL of a 13M stock solution and made a 300 mL solution?

• 390M

• 230M

• 0.43M

• 0.26M

Calculate the Molarity in a solution containing 40.0 g of NaCl dissolved in 500.0 ml of H2O.

• 0.08 M

• 12.5 M

• 1.37 M

• 0.74 M

What is the molarity of a solution made by diluting 26.5 mL of 6.00M HNO₃ to a volume of 250 mL?

• 15.9 M

• 0.636 M

• 0.642 M

• 1.59 M

Which of the following solutions has a molarity of 2.0?

• 0.050 mole of solute in 0.0250 L of solution

• 2.0 moles of solute in 0.5000 L of solution

• 3.0 moles of solute in 1.5000 L of solution

• none of the above

If you are given grams of solute, what must you do before you can solve for Molarity?

• divide grams by the formula mass

• multiply grams by the formula mass

• nothing, use grams

• divide the formula mass by the volume

 A teacher starts with 0.250 L of a 0.0150 M HBr solution and dilutes it to 0.750 L. What is the concentration of HBr in the new solution?

• 0.005 M

• 0.045 M

• 12.5 M

• 7.5 M

If 0.825 liters of solution contains 0.025 moles of CaCl₂, what is the molarity of the solution?

• 33 M

• 0.03 M

• 30.3 M

• 3.03 M

What is the molarity of a solution that contains 5 moles of solute in 2 liters of solution?

• 2.5 M

• 5 M

• 10 M

• 0.4 M

The term molar, which describes a solution's concentration, is written as?

• M

• mol

• g

• g/L

Which sweet tea would you expect to taste the sweetest?

• 1M

• 3M

• 3.1M

• 2.5M