Academic Subjects
➤
Chemistry
➤
General Chemistry
➤
Composition
➤
Converting 4.96 Grams B
2
O
3
To Moles
Find the number of moles in 4.96 g of B
2
O
3
?
First we want to find the molecular weight of diborontrioxide
Boron = 2(10.81 g/mole) = 21.62 g/mole
Oxide = 3(16.00 g/mole) = 48.00 g/mole
/
69.62 g/mole
and now, we convert
4.96
g B
2
O
3
(1 mole B
2
O
3
)
/
(69.62
g B
2
O
3
)
= 0.0712 moles B
2
O
3
The number of B
2
O
3
moles is 0.0712