Question

What is the mass of one atom of magnesium in grams?

Answer 1

So `4.03594014 * 10^-23 "grams"`

Explanation:

Here are some prefined values.

m = mass = `"g"`
M = molar mass = `"g"/("mol")`
A = Avagadro's Constant = `(6.02214086*10^23"particles")/"mol"`

`"mass"/"particle" = "M(Mg)"/"A"`, the particle being the one atom, so the mass for one atom.

`m(Mg) = "M(Mg)"/"A" = (24.305"g"/"mol")/(6.02214086*10^23 "particle"/"mol") = 4.03594014 * 10^-23 "g"/"particle"`

So `4.03594014 * 10^-23 " grams"` is the mass per particle, the particle being an atom.