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2 cards from this section. Quick, good the night before a test.
What is the formula for mass percentage?
Think about the total mass of the solution.
What is molarity?
It's usually represented by 'M'.
What defines colligative properties?
Think about properties like freezing point depression and boiling point elevation.
True or False: Molarity is calculated using the mass of solvent.
Molarity relates to liters of solution.
A chemist prepares a 1.5 L solution of NaCl with a molarity of 3 M. How many grams of NaCl did they dissolve? (Molar mass of NaCl = 58.5 g/mol)
Remember to use the formula that relates moles, molarity, and volume.
If a compound has a van’t Hoff factor of 2 and it’s responsible for a freezing point depression of 2°C in a 0.5 m solution, calculate its normal freezing point value.
You will need to revert to the original freezing point of the solvent.
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