In the reaction 4Al+_O2→2Al2O3 , what coefficient should be placed in front of the o2 to balance the reaction?
2 answers:
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Answer: Thus 8.41 g was the mass of the original sample
Explanation:
To calculate the moles :
According to stoichiometry :
As 3 moles of are produced by = 2 moles of
Thus 0.103 moles of are produced by =
of
Mass of
Thus 8.41 g was the mass of the original sample.