Concentration

What is concentration?

Calculate the percent by mass of a 50 grams of solute in 200.0 grams of solution? (Don't forget your % sign in your answer)

Calculate the percent by mass of the following solution: 25.0 grams of solute in 150.0 grams of solution

• 17%

• 25%

• 600

• 6%

If 0.002 g of PbCl₂ are dissolved in 2.0 g of water, how many parts per million are dissolved? (UNITS!!)

DON'T forget your UNITS!!!!

• 1

• 2

• 3

• 4

• A

• B

• C

• D

• 1

• 2

• 3

• 4

• A

• B

• C

• D

Calculate the molarity of each of the following solutions:      

2.5 mol of NaOH in 0.500 L of solution (UNITS!!!)