Mass/Volume Solution Preparation

What units should you always use for your final answer for a M/V problem?

• grams

• milligrams

• milliliters

• microliters

125 mg = ___g

• 125,000

• 1250

• 1.25

• 0.125

What mass of NaCl is needed to make 10 mL of 50 mg/mL NaCl solution? *Give final answer!

• 500 mg NaCl

• 0.5 g NaCl

• 500,000 g NaCl

• 50 mg NaCl

What mass of CaCl₂ is needed to make 100 mL of 1.2 g/mL CaCl₂ solution? *Give final answer!

• 0.12 g CaCl₂

• 120 mg CaCl₂

• 0.12 mg CaCl₂

• 120 g CaCl₂

• 120,000 g CaCl₂

What mass of sugar is needed to make 50 mL of 25 mg/mL sugar solution? *Give final answer!

• 1250 g sugar

• 1250 mg sugar

• 1,250,000 mg sugar

• 1,250,000 g sugar

• 1.25 g sugar

What mass of KCl is needed to make 5 mL of 3.8 g/mL KCl solution? *Give final answer!

• 19,000 g KCl

• 0.019 g sugar

• 19 mg KCl

• 19 g KCl

• 19,000 mg KCl

Arrange these solutions from most dilute to most concentrated:

• A, B, C, D

• B, A, D, C

• D, A, C, B

• B, C, A, D

Which of the following is NOT a unit of concentration?

• g

• mg/mL

• g/mL

• g/L