Concentration %.

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Presentation transcript:

Concentration %

C=m/V Review From Last Class Solution = solute + solvent Concentration 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: