Molarity and Dilution Calculations

What is the molarity of 0.0684 mol of NaCl in 3.8 L of solution?

• 0.018 M

• 0.001M

• 1.052 M

• 0.062 M

How many mL of 10.8 M HCl are required to make 100.0 mL of 3.00 M acid?
(c₁V₁ = c₂V₂)

Hint: remember to use the correct number of significant figures.

• 27.8 mL

• 27.78 mL

• 2.8 mL

• 278 mL

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

• 390M

• 230M

• 0.43M

• 0.26M

What volume of water must be added to 10 mL of 2.5 M H₂SO₄ solution to create a diluted solution with a concentration of 1 M.

• 25 mL

• 15 mL

• 10 mL

• 5 mL

The mass of sodium carbonate (Na₂CO₃) required to create a 0.25 M solution with a volume of 250 mL is

• 0.25 g

• 26.5 g

• 6.625 g

• 0.0625 g

Tags

NGSS.HS-PS1-5

What is the molarity of 4 grams of sodium chloride in 3,800 mL of solution?

• 0.018 M

• 0.018 mol

• 1.052 M

• 1.052 mol

If you have 0.045 L of 0.465 M potassium bromide. How many moles of potassium bromide are present?

• 20.9 mol

• 0.021 mol

• 0.02 mol

• 0.0209 mol

Find the molarity of 186.55 g of sucrose, C₁₂H₂₂O₁₁ (MM = 342) in 250 mL of water.

• 2.18 M

• 0.746 M

• 1.18 M

• 0.545 M

What volume is needed to make a 2.45 M solution of KCl using 0.50 mol of KCl?

• 4.9 L

• 0.20 L

• 1.2 L

What is the formula for molarity?

• moles/grams

• moles/kilograms

• moles/milliliters

• moles/liters