Question

Which of the following contains the largest number of atoms?

A) .5 mole of water

B) 23 g of water

C) Avogadro's number of argon atoms

D) 4 g of methane

E) .5 mole of nitrogen gas

please help ! thank you

Answer

A) .5 mole of H2O ===> 1.5 moles of atoms

B) 23 g of H2O @ 18g/mol = 1.28 mol H2) ===> 3.83 mol atoms

C) Avogadro's number of argon atoms ===> 1 mole of atoms

D) 4 g of methane @ 16 g/mol = 0.25 mol CH4 ===> 1.25 mol atoms

E) .5 mole of N2 = 1.0 mol of atoms

your answer is

B) 23 g of water

Sep 29 at 11:13