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# Stoichiometry and Mole/Mass Questions on the Combustion of Propane: Detailed Step by Step Solution

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Propane, C3H8, in a tank that is usually the size of a basketball is often used for grills.
a) Write a balanced equation for the combustion of propane.

b) Calculate the number of moles of oxygen required to burn 5000 g (11.0 lbs) of propane.

c) Calculate the number of kilograms of O2 required to burn propane

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#### Solution Preview

(a) All combustion reactions are of the same form. They combine the compound with oxygen gas and produce carbon dioxide and water. Therefore, we write this:

C3H8 + O2 -----> CO2 + H2O

Now we just have to balance it. Always do combustion reactions in ...

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