Molarity, Molality, and Dilutions

Drag the variables to the correct place in the formula

a

b

c

L of solution

Moles of solute

Molarity

What is the molarity of 1.2 moles of CaCO₃ in 1.22 L of solution?

• 0.98 M

• 9.8 M

• 5.11 M

• 0.16 M

What is the molarity of 4 g of NaCl (MM=58.45g/mol) in 3,800 mL of solution?

• 0.018 M

• 0.0011 M

• 1.052 M

• 0.062 M

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

How many grams of AgNO₃ are needed to prepare 0.125M solution in 250 mL of water? (MM 169.87g/mol)

• .03g

• 0.5g

• 5.3g

• 84.9g

Tags

NGSS.HS-PS1-7

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

How many grams of calcium hydroxide are needed to produce 500. ml of 1.66 M calcium hydroxide solution?
 (M = mol solute/ L solution)

• 38.7 g

• 61.5 g

• 94.0 g

• 19.7 g

What is the molarity of a solution made by adding 1.565 moles of PbNO₃ to .5 L?

• 300. M

• 31.3 M

• 3.13 M

• 1.56 M

Tags

NGSS.HS-PS1-5

Molarity is measured in

• moles per kg

• mols per L

• moles per kJ

• moles per mL

Tags

NGSS.HS-PS1-5

How many moles of NaCl are present in a solution with a molarity of 8.59 M and a volume of .125 L?

• 1074 mol

• 0.069 mol

• 1.07 mol

• 62.7 mol