Molarity and Concentrations

Concentration of a solution is expressed in

• moles
• molar
• molar mass
• molarity

A solution is made up of

• solute
• solvent
• solute in a solvent
• solute in a solution

Molarity is

• moles per unit vol (mL)
• moles per unit vol (L)
• moles per unit vol (m³)
• moles per unit vol (mm³)

Tags

NGSS.HS-PS1-5

Unit for molarity

• g/L
• m
• g/cm³
• M

Tags

NGSS.HS-PS1-5

How many liters would you need to make a 1 M solution if you have 6 mol of Sodium Hydroxide? 

• 2
• 3
• 4
• 6 

How many moles of NaCl are present in a solution with a molarity of 8.59 M and a volume of 125 mL?

• 1074 mol
• 0.069 mol
• 1.07 mol
• 62.7 mol

True or False? The higher the concentration of a solution the less solutes it has in it.

• True
• False

Tags

NGSS.HS-PS1-5

Calculate the molarity of the following solution:  1.0 mole of KCl in 750.0 mL of solution.

• 0.750 M
• 99 M
• 1.3 M
• 2.0 M

What is the molarity of a solution made by diluting 26.5 mL of 6.00M HNO₃ to a volume of 250. mL?

• 15.9 M
• 0.636 M
• 0.642 M
• 1.59 M

Tags

NGSS.HS-PS1-7

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