Headings Moles Search Questions 
gcsescience.com 4 gcsescience.com
Elements which exist as Atoms.
Just as one mole of carbon atoms has a mass of 12 g,
so the mass of one mole of
the atoms of any element
is its "relative atomic mass" in grams.
For example,
look up the relative atomic mass of
sodium (Na),
(the green number above it in the periodic table).
One mole of sodium has a mass of
23 g.
One
mole of
helium has a mass of 4 g,
neon has a mass of 20 g,
magnesium has a mass of 24 g,
calcium has a mass of 40
g.
This is easy for elements which exist
as atoms.
What about elements which exist as molecules or compounds?
Headings Moles Search Questions
gcsescience.com Contents The Periodic Table Index Quizzes gcsescience.com
Copyright © 2008 Dr. Colin France. All Rights Reserved.