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

1 Answer
Teun
Dec 15, 2016

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.

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