Concentration
%
Review From Last Class
• Solution = solute + solvent
• Concentration
C=m/V
C: concentration (g/L)
m: mass of solute (grams)
V: volume of solution (litres)
Percentage
10
10
Percent
• If we’re a class of 29 students and 4
students went to the science fair, what
percentage of students went?
Percent m/V
• We can also measure concentration in %
(m/V)
Percent m/V
100ml of solution
1 ml of water
(solvent)
1 g of solute
In other words
• X% = Xg/100ml
• So if I have an 8% (m/V) solution, how
many grams of solute do I have in 100ml
of solution?
Situation
Practice Problem
What is the % concentration
of sugar in a 355ml can of
Coca-Cola?
Given:
Find:
Practice Problem
What is the % concentration
of sugar in a 591ml bottle of
Gatorade?
Given:
Find:
Example
What is the maximum volume that Sarah
can make of an 8% solution of chocolate
milk if she uses 24g of Nesquik powder?
Given:
Find: