Molarity and Solution Stoichiometry

What is the molarity in 650. ml of solution containing 63 grams of sodium chloride?

• 2.4 M

• 0.86 M

• 1.7 M

• 0.54 M

Tags

NGSS.HS-PS1-7

18.26 mL of a 1.50M hydrochloric acid reacts with magnesium hydroxide. Calculate the mass of magnesium hydroxide needed for the reaction. Mg(OH)₂ + 2 HCl -> 2 H₂O + MgCl₂

• 4.68 g Mg(OH)₂

• 0.789 g Mg(OH)₂

• 0.0274 Mg(OH)₂

• 1.07 g Mg(OH)₂

Tags

NGSS.HS-PS1-7

The ___ is the thing being dissolved

• solute

• solvent

Which sweet tea would you expect to taste the sweetest?

• 1M

• 3M

• 3.1M

• 2.5M

Tags

NGSS.HS-PS1-5

How many L are required to make 3.5 M hydrochloric acid using 1.1 moles? 

• 3.18 L

• 0.31 L

• 3.85 L

• 4.6 L

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

• 20.9 mol

• 0.021 mol

• 0.02 mol

• 0.0209 mol

Converting from one substance to another using mole ratios is called

• colligative properties

• mole conversions

• molarity

• stoichiometry

When converting from volume of a solution to moles you need to

• --- L x 1 mole / 22.4 L

• --- L x 1 mole / 24.5 L

• --- L x * mole / 1 L (where * mole is the Molarity of the solution)

• --- L x 1 L / * mole (where * mole is the Molarity of the solution)

What is the molarity of a solution prepared by dissolving 5.85 grams of sodium chloride in enough water to make 500 mL of solution?

• 0.2 M

• 0.4 M

• 0.1 M

• 0.5 M

A solution contains 0.5 moles of solute in 2 liters of solution. What is the molarity of the solution?

• 0.25 M

• 0.5 M

• 1 M

• 0.1 M