The number of units, which are used to express concentration of solutions from the following is
Mass percent, Mole, Mole fraction, Molarity, ppm, Molality
Mass percent, Mole, Mole fraction, Molarity, ppm, Molality
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Answer: 5
Solution
From the list: Mass percent, Mole, Mole fraction, Molarity, ppm, Molality — the units used to express concentration of solutions are:
1. Mass percent
2. Mole fraction
3. Molarity
4. ppm
5. Molality
Mole is simply a unit of amount of substance, not a concentration unit. The remaining 5 terms (mass percent, mole fraction, molarity, ppm, molality) all express how much solute is present relative to the solution or solvent, making them valid concentration units.
1. Mass percent
2. Mole fraction
3. Molarity
4. ppm
5. Molality
Mole is simply a unit of amount of substance, not a concentration unit. The remaining 5 terms (mass percent, mole fraction, molarity, ppm, molality) all express how much solute is present relative to the solution or solvent, making them valid concentration units.
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