Molarity and Molality Quiz

What is the molarity of a solution formed by dissolving 0.45 mol of potassium hydroxide (KOH) in enough water to form 0.674 L of solution? Use the appropriate formula to solve for the missing variable.

• 0.30 M

• 0.67 M

• 1.49 M

How many moles of sodium nitrate are there in 0.610 L of a 0.7 M solution of sodium nitrate? Use the appropriate formula to solve for the missing variable.

• 0.43 mol

• 0.87 mol

• 1.15 mol

Tags

NGSS.HS-PS1-7

How many liters of 0.9 M BaCl₂ are needed to have 0.35 mol of BaCl₂? Use the appropriate formula to solve for the missing variable.

• 0.32 L

• 0.39 L

• 2.57 L

Tags

NGSS.HS-PS1-7

What is the molality of a solution formed by dissolving 1.2 moles of a solute in 0.800 kg of solvent?

• 0.67 m

• 0.96 m

• 1.5 m

How many kilograms of water are needed to form a 0.01 m solution if 5.1 moles are used?

• 0.0002 kg

• 0.051 kg

• 510 kg

Tags

NGSS.HS-PS1-7

How many moles of BaI₂ are present in 0.250 kg of H₂O if the concentration is 0.3 m?

• 0.075 mol

• 0.83 mol

• 1.25 mol

Tags

NGSS.HS-PS1-7