Asked by Gray
                "How many moles of oxygen are required to react completely with 5 mol C(8)H(18)?"
2C(8)H(18) + 25O(2) => 16CO(2) + 18 H(2)O
In the question, how do I know if "oxygen" means the molecule O(2) or the element O?
            
        2C(8)H(18) + 25O(2) => 16CO(2) + 18 H(2)O
In the question, how do I know if "oxygen" means the molecule O(2) or the element O?
Answers
                    Answered by
            bobpursley
            
    http://www.jiskha.com/display.cgi?id=1285089963  as an example.
Oxygen refers to the diatomic molecule, O2.
    
Oxygen refers to the diatomic molecule, O2.
                    Answered by
            Gray
            
    But if the question wanted me to find the moles of O, how would it be phrased? Thanks
    
                    Answered by
            bobpursley
            
    It would ask, moles of the oxygen free atom, O.
    
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