The atomic mass, molecular mass, or formula mass of a substance expressed in grams is called:
Correct answer: B. Molar mass
- A. Avogadro's number
- B. Molar mass
- C. Molar volume
- D. Mole
Explanation
Molar mass is the mass of one mole of a substance. It is numerically equal to the atomic, molecular, or formula mass expressed in atomic mass units (amu), but when expressed in grams, it represents the mass of one mole of the substance in grams per mole (g/mol).
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About Fundamental Concepts of Chemistry
Mole calculations connect mass, number of particles and Avogadro's number, while balanced equations provide the mole ratios used in stoichiometry. Questions cover limiting and excess reactants, theoretical yield and percentage yield, including identifying which reactant is consumed first and comparing the actual product with the maximum possible product.
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