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How many grams of aluminum burned if 200.0 grams of aluminum oxide formed?


Sagot :

Answer:

approximately 106 grams

Explanation:

The molecular mass of Aluminum Oxide is approximately 102 grams per mole.

2

×

A

l

=

2

×

27

=

54

3

×

O

=

3

×

16

=

48

54

+

48

=

102

200

102

=

1.96

moles

There are two atoms of Aluminum in one mole and each atom has a mass of approximately 27 grams so

Mass of Al =

1.96

×

2

×

27

=

106

grams