Concentration and Molarity

A solution is made up of

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

Concentration of a solution is expressed in

• moles
• molar
• molar mass
• molarity

Tags

NGSS.HS-PS1-5

Molarity is

• moles per unit vol (ml)

• moles per unit vol (LIter)

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

Tags

NGSS.HS-PS1-5

Unit for molarity

• g/dm³
• m
• g/cm³
• M

Tags

NGSS.HS-PS1-5

To prepare 1 Liter of a 2.5M solution of NaOH, you will need a mass of ______g NaOH (and enough water to make 1 Liter.)

• 10g
• 100g
• 40g
• 80g

If you added 120g of NaOH to a flask and filled to the 1 Liter mark, what will molarity will be?

• 2M
• 3M
• 120M
• 40M

A 0.25 Liter solution contains 0.4 mol NaOH. Find its molarity.

• 0.1M
• 1.6M
• 0.4M
• 0.625M

The ___ is the thing being dissolved

• solute
• solvent

What does it mean if a mixture is heterogeneous?

• you can see the different parts
• cannot tell one part from another
• very well blended
• made of elements

What does it mean if a mixture is homogeneous?

• you can see the different parts
• cannot tell one part from another
• chunks of particles
• made of elements