Which has more atoms: 3.0 g of iron, or 2.0 g of sulfur?

1 Answer
anor277
Jan 11, 2016

You must calculate the molar quantity of each element. Moles relate to the number of species. If there are 1 mole of particles, there are 6.022xx10^23 individual particles.

Explanation:

Moles of iron, (3.0*cancelg)/(55.85*cancel(g)*mol^-1) = ??mol

Moles of sulfur, (2.0*cancelg)/(32.06*cancel(g)*mol^-1) = ??mol

I leave it to you to do these calculation and get an answer in moles. It looks pretty clear that there are more sulfur atoms.

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