Thank you for being helpful in the check my interpretation of the three word problems below,and,let me know if I'm on the right track?
Determine the mass of water vapor formed when 1.00g of Butane (C4H10)
If I've not responded to this question in correct context above, please repost.
Here is an example problem using stoichiometry.
http://www.jiskha.com/science/chemistry/stoichiometry.html