mole ration and combustion

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[rana88]

I have two questions please:


A given hydrocarbon is converted completely to water and carbon dioxide and the mole ratio of water to carbon dioxide is 1.33:1.00. The hydrocarbon COULD be 
    CH4 
   C2H4 
   C2H6 
   C3H4 
   C4H8 
   None of these. 
 


   Question 2  10 points    Save   
  b023: Acetaldehyde has the formula CH3CHO. Let it undergo combustion. How many moles of oxygen gas are needed for each mole of acetaldehyde? 
    1 
   1.5 
   2 
   2.5 
   3 
   3.5 
   4 
   4.5 
   5 
   None of these. 
 

[mr_cochran]

Have you a balanced equation to help you out?
Do you know how to balance simple hydrocarbon combustion equations?

We're here to help you (which we are most willing to do), but not do it for you.