The atomic mass, molecular mass, ionic mass or formula mass of a substance expressed in grams is called:
Correct answer: D. Molar mass of substance
- A. Mole of a substance
- B. Weight of substance
- C. Mass of substance
- D. Molar mass of substance
Explanation
The molar mass of a substance is the mass of 1 mole of that substance, expressed in grams per mole (g/mol).It can be calculated from the atomic mass, molecular mass, or formula mass, but when expressed in grams, it represents the molar mass.
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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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