Molarity Dilution

What volume, in milliliters, of 10.0 M NaOH is needed to prepare 300 mL of 2.00 M NaOH by dilution?

• 0.067 mL

• 60.0 mL

• 100 mL

• 125 mL

You need to make 200 mL of a 0.20 M aqueous solution of sodium chloride. The only available solution is 1.0 M. Determine how to make the needed dilution.

• Add 160 mL to the initial volume

• Add 160 grams to the initial volume

• Evaporate 160 mL from the initial volume

• the experiment cannot be conducted with the materials provided

A dilution is when

• solute is added to the volume of stock solution

• water is added to the volume of stock solution

• solute is removed from the volume of stock solution

• water is removed from the volume of stock solution

Tags

NGSS.HS-PS1-5

The term molar, which describes a solution's concentration, is written as?

• M

• mol

• g

• g/L

If you are given grams of solute, what must you do before you can solve for Molarity?

• divide grams by the formula mass

• multiply grams by the formula mass

• nothing, use grams

• divide the formula mass by the volume

What is the definition of molarity?

• The mass of a substance in grams

• The number of particles in a substance

• The number of moles of solute per liter of solution

• The volume of solvent in liters

Tags

NGSS.HS-PS1-5

If 0.825 liters of solution contains 0.025 moles of CaCl₂, what is the molarity of the solution?

• 33 M

• 0.03 M

• 30.3 M

• 3.03 M

Which of these is the CORRECT equation for solving for Molarity?

• M = mol / mL

• M = mol / L

• M= mL / mol

• M = L / mol

Molarity is ...

• grams of solute/deciliters of solvent.

• grams of solute/liters of solution.

• moles of solute/liters of solution.

• moles of solute/milliliters of solvent.

A solution is made by dissolving 0.50 mole of NaCl in enough water to give a final volume of 400.0 mL. What is the molarity of the solution?

• 0.10 M

• 0.40 M

• 1.25 M

• 2.33 M