Question

What is equal to the number of particles in 18 grams of carbon-12?

Responses

1.5 moles

1.5 moles

1:1.5 molar volume
1 colon 1.5 molar volume

1.5:1 mole ratio
1.5 colon 1 mole ratio

1.5:1 molar mass

Answer 1

18 g C-12 = 18 / 12 = 1.5 mol.

So the number of particles = 1.5 × Avogadro's number = 1.5 × 6.02214076×10^23 ≈ 9.03×10^23 atoms.