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

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

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