Molarity and Dilutions

Calculate the Molarity in a solution containing 40.0 g of NaCl dissolved in 0.50 liters of H₂O.

• 0.08 M

• 12.5 M

• 1.37 M

• 0.74 M

Calculate the grams of NaOH present in 0.01 L of a 2.0 M NaOH solution.

• 0.8 grams

• 1.25 grams

• 0.3 grams

• 0.02 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 is the volume, in liters, of a solution with 10.0 M and 2.00 moles of NaOH?

• 120 L

• 200 L

• 0.200 L

• 125 L

Tags

NGSS.HS-PS1-7

What volume of 1.50 M KBr can be made from 15.6 mL of concentrated KBr with a molarity of 9.65 M?

• 150. mL
• 151 mL
• 1.00 L
• 100. mL

Tags

NGSS.HS-PS1-7

125.0 mL of 2.00 M calcium hydroxide solution is diluted to a concentration of 1.50 M. How many mL of water was added to the original volume?

• 167 mL

• 42.0 mL

• 93.8 mL

• 0.0240 mL

How many liters would you need to make a 1 M solution if you have 6 liters of 2 M Sodium Hydroxide?

• 6

• 3

• 4

• 12

If I have 340 mL of a 0.5 M NaBr solution, what will the concentration be if I add 560 mL more water to it?

• .188 M

• 3.78 M

• .389 M

• 1.76 M

How many mL of 10.8M HCl are required to make 100.0 mL of 3.00M acid?

• 27.8 mL
• 27.78 mL
• 2.8 mL
• 278 mL

Tags

NGSS.HS-PS1-7