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CHM 101 CHM 101 Past Questions Objective Question

Question

Avogadro’s number represents:
Options
A Number of atoms in 12 g of carbon-12
Correct Answer
B Number of molecules in 1 g of water
C Number of ions in 100 mL of solution
D Number of protons in a nucleus
Correct Answer

Option A is the correct answer.

Detailed Explanation

Avogadro's number (6.022 x 10²³) is defined as the number of atoms in exactly 12 grams of pure carbon-12. It is the number of particles (atoms, molecules, ions, etc.) in one mole of a substance.

Hint

It's the number of particles in one mole, based on the carbon-12 standard.

Question Info