Avogadro's number is the number of

Question

Quizplus · Accepted Answer

Avogadro's number is defined as the number of particles (atoms, molecules, ions, etc.) in one mole of a substance. Therefore, option A is correct. Option B is incorrect because amu (atomic mass units) are used to express the mass of a single atom, while moles are used to express the quantity of atoms. Option C is incorrect because the number of grams in one mole depends on the molar mass of the substance, which varies from one substance to another. Option D is incorrect because the value given (6.02 × 10²³ grams of an element) is not a valid unit, and even if it were, it would not be relevant to Avogadro's number. Option E is also incorrect because the value given (6.02 × 10²³amu of an element) is not equivalent to one mole of the element, since the molar mass (in grams per mole) is needed to convert between amu and moles.

Avogadro's Number Is the Number of