Concentration Calculations

What is the molarity of 2.5 mol of NaOH in 12.0 L of solution?

• 0.21 M

• 30 M

• 4.8 M

• 20.8 M

What is the molarity of 122.5 g of AlCl₃ in 1.0 L of solution? The molar mass of AlCl3 is 133.33 g = 1 mol.

• 1.225 M

• 0.92 M

• 0.1225 M

What is the molarity of 4.0 grams of sodium chloride in 3,800 mL of solution? The molar mass of sodium chloride is 58.44 g = 1 mol.

• 0.018 M

• 0.068 M

• 260 M

• 1.1 M

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

• 20.9 mol

• 0.097 mol

• 10. mol

• 0.021 mol

How many Liters of solution are required to make 3.5 M hydrochloric acid using 1.1 moles?

• 3.2 L

• 0.31 L

• 3.9 L

• 4.6 L

What is the molarity of a 0.5L sample of a solution that contains 60.0 g of sodium hydroxide (NaOH)? The molar mass of NaOH is 40.00 g = 1 mol.

• 0.8 M

• 1.5M

• 3.0M

• 6.0M

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

• 1070 gram

• 68.7 mol

• 1.07 mol

• 0.0146 mol

How many grams of AgNO₃ are needed to prepare 0.125M solution in 250. mL of water? (the molar mass of AgNO₃ is 169.87g=1 mole)

• .0313 g

• 31.3 g

• 5.31 g

• 84.9 g

How many mL of 2.0M NaCl do you need to prepare 100. mL of 0.150M NaCl?

• 7.5 mL

• 15 mL

• 1333 mL

• 200 mL

What is the molarity of a solution made by diluting 26.5 mL of 6.00M HNO₃ to a volume of 250 mL?

• 15.9 M

• 0.636 M

• 0.642 M

• 1.59 M