Which unit is used for molar mass?

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Study for the IGCSE Edexcel Chemistry Test. Access flashcards and multiple choice questions with hints and explanations. Get ready for your exam!

Multiple Choice

Which unit is used for molar mass?

Explanation:
Molar mass is a measure of how much mass is in one mole of a substance, so the unit must express mass per amount of substance. That’s why grams per mole (g/mol) is used. It shows how many grams of material there are in one mole. Using just grams would give mass without tying it to a specific amount of substance, while using moles would give the amount without mass, and liters is a unit of volume. So grams per mole is the appropriate unit.

Molar mass is a measure of how much mass is in one mole of a substance, so the unit must express mass per amount of substance. That’s why grams per mole (g/mol) is used. It shows how many grams of material there are in one mole. Using just grams would give mass without tying it to a specific amount of substance, while using moles would give the amount without mass, and liters is a unit of volume. So grams per mole is the appropriate unit.

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