Dilutions and Molarity

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

• M

• mol

• g

• g/L

You need to make 200 mL of a 0.20 M aqueous solution of sodium chloride. The only available solution is 1.0 M. Determine how to make the needed dilution.

• Add 160 mL to the initial volume

• Add 160 grams to the initial volume

• Evaporate 160 mL from the initial volume

• the experiment cannot be conducted with the materials provided

Tags

NGSS.HS-ETS1-2

A dilution is when

• solute is added to the volume of stock solution

• water is added to the volume of stock solution

• solute is removed from the volume of stock solution

• water is removed from the volume of stock solution

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

Tags

NGSS.HS-PS1-7

Calculate the grams of NaOH present in 10.0 mL of a 2.0 M NaOH solution.

• 0.8 grams

• 2000 grams

• 0.3 grams

• 5 grams

Tags

NGSS.HS-PS1-7

A solution is made by dissolving 0.50 mole of NaCl in enough water to give a final volume of 400.0 mL. What is the molarity of the solution?

• 0.10 M

• 0.40 M

• 1.25 M

• 2.33 M

A 0.500 M solution of NaOH, which contains 0.750 mole of solute, would have a volume, in milliliters

• 0.667 mL

• 1200 mL

• 1500 mL

• 2100 mL

What would be the tube dilution?

• 1/10
• 2/10
• 1/100
• 1/1000

What would be the final dilution?

• 1/10
• 1/100
• 1/1000
• 1/10000

dissolving a gas in a solution is directly related to what property

• pressure

• volume

• mass