How many grams of aluminum oxide can be made if you start with 108 g of aluminum reacting completely with oxygen?
A.)204g
B.)408 g
C.)102g
C.)306g
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Ответ:
A
Explanation:
Ответ:
There are 20.0 moles of hydrogen atom in 5.0 moles of methane.
Explanation:
We are given:
Moles of methane = 5.0 mol
The chemical formula for methane is
By Stoichiometry:
in 1 mole of methane there are 4 moles of hydrogen atom.
So, moles of hydrogen atom in 5.0 mol of methane will be :
Hence, there are 20.0 moles of hydrogen atom in 5.0 moles of methane.