Question

what is avogadros number?
a. the weight of one mole of a substance
b. the number of particles in one mole
c. the speed of a chemical reaction
d. the number of protons in an atom

Explanation:

Avogadro's number is defined as the number of particles (atoms, molecules, ions, etc.) in one mole of a substance. It is approximately \(6.022\times10^{23}\) particles per mole.

• Option a: The weight of one mole of a substance is called molar mass, not Avogadro's number.
• Option c: The speed of a chemical reaction is related to reaction kinetics, not Avogadro's number.
• Option d: The number of protons in an atom is the atomic number of the element.

Answer:

B. The number of particles in one mole