How many moles of H2O (g) are produced when 4.3 grams O2 (g) are consumed?

Question

C4H6+O2-->CO2+H2O

My try at balance is:
C4H6+4O2+3/2O2-->4CO2+3H2O

Answer 1

You have it balanced but it is awkward. It makes things easier to use whole numbers.
2C4H6 + 11O2 ==> 8CO2 + 6H2O
Here is a site that gives a worked example of how to solve a stoichiometry problem (which this is).
http://www.jiskha.com/science/chemistry/stoichiometry.html