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

Tags

NGSS.HS-PS1-7

What is the molality of a solution containing 1.3 mol in 13.4 kg of solution?

• 9.7 m
• 17.42 m
• 0.097 m

What is the molarity of 122.5 g of AlCl₃ in 1.0 L of solution?

• 1.225 M
• 0.92 M
• 0.1225 M

What is the molality of 1.2 g of HCl in 750 g of solution?

• 0.04 m
• 0.00004 m
• 0.0016 m

Tags

NGSS.HS-PS1-7

What is the concentration, in percent by mass, of 0.62 g of solute in 45.0 g of solution?

• 0.014 %
• 1.4 %
• 0.13%

What is the concentration, in percent by volume, of 15.3 mL of solute in 2.65 L of solution?

• 0.58%
• 0.0058%
• 5.8%

What mass of solute is needed to make 75.0 g of a 3.4% solution?

• 2.55 g
• 22 g
• 0.05 g

What is the volume of solution needed to make a 3.5% by volume solution using 2.0mL of solvent?

• 57 mL
• 0.57 mL
• 7 mL

What is the mole fraction of ethanol when 0.504 mol of ethanol are mixed with 4.06 mol of water?

• 0.110
• 0.124
• 0.097

What is the mole fraction of MgF₂ in a solution  that has 0.321 mol of MgF₂ dissolved in 4.44 mol of water?

• 0.0674
• 0.0722
• 1.425