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We also now have 4 hydrogens on the left, four hydrogens on the right, two oxygens on the left, and two oxygens on the right. We now have 36 grams of stuff on the left and 36 grams on the right. (2 x 2 grams of hydrogen) + 32 grams of oxygen = (2 x 18 grams of water) This says that we need two hydrogen molecules to combine with one oxygen molecule to form two new water molecules. They're not lost, we just haven't balanced the equation! You might have also noticed that there are two oxygen s on the left and only one on the right! We need to get things in the correct proportions for this reaction to be balanced. You've lost 16 grams of stuff, and in this reaction that just doesn't happen! Where did the 16 grams go? What this says is that you start with 34 grams of stuff and end up with 18 grams of stuff.
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If you do some of the gram molecular weight calculations you will find this:Ģ grams of hydrogen + 32 grams of oxygen = 18 grams of water We can form water by combing hydrogen gas (H2) and oxygen (O2) in the presence of electricity. In other words, if I start baking bread with 10 pounds of flour, I should end up with 10 pounds of bread, unless some is lost onto the floor or if some of it goes up in smoke!Ī simple example goes a long way. This is a fundamental skill in chemistry, as you might have noticed from the short reading in stoichiometry! Balancing equations means writing chemical equations such that the amount of stuff you start with in the reaction equals the amount of stuff you end up with as a product. Acids, Bases & Salts and It's Properties.Daniell Cell with Construction and Working:.Metals and Non-Metals with Physical and Chemical.Law of Conservation of Mass and Landolt Experiment.Definitation of Alpha Particles, Beta Particles an.Empirical Formula and Molecular Formula:.Percent Composition, Empirical Formula,Molecular W.Journal of Chemical Information and Computer Sciences 29: 60–66. PAD programming and its application in chemistry. Journal of Chemical Education 71: 295–297. Let a computer balance your chemical equations and determine the number of independent reactions. Journal of Chemical Education 74: 1369–1371. Using Mathematica and Maple to obtain chemical equations.
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Designing the User Interface, Addison Wesley, New York. A computer program designed to balance inorganic chemical equations. Journal of Chemical Education u: 240–241. REACT: Exploring practical thermodynamic and equilibrium calculations. A question of basic chemical literacy? Journal of Chemical Education 66: 217–218. Chemical and Engineering News 78: 17–22, 24. Balancing chemical equations with a Commodore64. Journal of Science Education and Technology 5: 121–130. Effect of computer interfaces on chemistry problem solving among various ethnic groups: A comparison of Pen-Point and Powerbook computers. The Electronic Journal of Science Education 4. Effect of gender on computer-based chemistry problem solving: Early findings. EQUBAL-A computer program for balancing chemical equations. Journal of Chemical Education 49: 754.ĭun, S. A computer program for balancing chemical equations. Journal of Chemical Education 72: 233–236.īrown, J. Journal of Chemical Education 59: 728–734.īrooks, D. A general method which is quick, simple, and has unexpected applications.