Gaseous butane reacts with gaseous oxygen gas to produce gaseous carbon dioxide and gaseous water . If of water is produced from the reaction of of butane and of oxygen gas, calculate the percent yield of water. Be sure your answer has the correct number of significant digits in it.

The given question is incomplete. The complete question is :

Gaseous butane reacts with gaseous oxygen gas  to produce gaseous carbon dioxide and gaseous water . If 1.31g of water is produced from the reaction of 4.65g of butane and 10.8g of oxygen gas, calculate the percent yield of water. Be sure your answer has the correct number of significant digits in it.

28.0 %

Explanation:

To calculate the moles :

According to stoichiometry :

13 moles of require 2 moles of butane

Thus 0.34 moles of will require=  of butane

Thus is the limiting reagent as it limits the formation of product and butane is the excess reagent.

As 13 moles of give = 10 moles of

Thus 0.34 moles of give =  of

Mass of

The percent yield of water is 28.0 %