how many proton in 100g caco3
Answers
Well, calcium carbonate, or limestone, has a chemical formula of
C
a
C
O
3
. It has a molar mass of around
100
g/mol
.
So, in
10
g
of calcium carbonate, there will be
10
g
100
g
/mol
=
0.1
mol
So, there will be
0.1
moles of calcium carbonate in this sample.
One mole of molecules is defined by
6.02
⋅
10
23
molecules.
Therefore, there exist
6.02
⋅
10
23
⋅
0.1
=
6.02
⋅
10
22
molecules of calcium carbonate.
C
a
C
O
3
consists of one calcium atom, one carbon atom, and three oxygen atoms.
A calcium atom has
20
protons, a carbon atom has
6
protons, and one oxygen atom has
8
protons, and so three oxygen atoms would have
8
⋅
3
=
24
protons.
In total, one molecule of calcium carbonate has
20
+
6
+
24
=
50
protons. But, we have
6.02
⋅
10
22
molecules of calcium carbonate.
Therefore, in total, we would have
6.02
⋅
10
22
⋅
50
=
3.01
⋅
10
24
protons.