Sources

• Helmenstine, Anne M. "Mass Percent Composition Problem - Calculation of Mass Percent Composition." Chemistry - Periodic Table, Chemistry Projects,            and Chemistry Homework Help. About.com. Web. 28 Nov. 2011. <http://chemistry.about.com/od/workedchemistryproblems/a/mass-percent-worked-               problem.htm>.

• "Sodium Bicarbonate." Wikipedia, the Free Encyclopedia. Web. 28 Nov. 2011. <http://en.wikipedia.org/wiki/Sodium_bicarbonate>.

• "Is Sodium Bicarbonate Polar or Non-polar? What Type of Bond Is Sodium Bicarbonate? - Yahoo! Answers." Yahoo! Answers - Home. Web. 28 Nov. 2011.             <http://answers.yahoo.com/question/index?qid=20071205115235AAnytaK>.