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42 votes
42 votes
4Na + O2 2Na2O

How many moles of Na2O will be produced from 4.35 x 10^24 atoms of Na?
with explanation

User Pixartist
by
3.0k points

1 Answer

20 votes
20 votes
4
N
a
+
O
2

2
N
a
2
O
.
By the stoichiometry of this reaction if 5 mol natrium react, then 2.5 mol
N
a
2
O
should result.
Step-by-step explanation:
The molecular mass of natrium oxide is
61.98

g

m
o
l

1
. If
5

m
o
l
natrium react, then
5
2

m
o
l
×
61.98

g

m
o
l

1

=

154.95

g
natrium oxide should result.
So what have I done here? First, I had a balanced chemical equation (this is the important step; is it balanced?). Then I used the stoichiometry to get the molar quantity of product, and converted this molar quantity to mass. If this is not clear, I am willing to have another go
User Robert Gomez
by
3.2k points