Calcium oxide anion meatl or metal
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Answer:
The leftover is 15 g of oxygen rather than liquid hexane as the fuel limits the reaction.
Explanation:
Hello!
In this case, since the described combustion reaction is:
Thus, since 5.2 g of hexane (86.2 g/mol) is reacted with 33.0 g of oxygen (32.0 g/mol) we can compute the mass of hexane that was actually consumed via stoichiometry with oxygen (1:19/2 mole ratio):
It is proved then than the hexane won't have any leftover but oxygen does, as shown below:
It means the leftover of oxygen is:
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