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dapat equal ang index, kung may dalawang o2 sa kaliwa dapat dalawa rin ang 02 sa kanan.awww chem fave subject nung hs MAHIRAP TALAGA YAN. PAERO PARA SAKIN NAKAKLITO LANG, mahaba kase ang process and dapat double check palagi. pero may iba balanced na kaagad, d mo lang napapansin. 1.Write the unbalanced equation. SnO2 + H2 → Sn + H2O Refer to Table of Common polymath Polyatomic Ions and Formulas of Ionic Compounds polymath if you have trouble writing the chemical formulas of the products and reactants. 2.Balance the equation. Look at the equation and see which elements are not balanced. In this case, there are two oxygen atoms on the lefthand side of the equation and only one on the righthand side. Correct this by putting a coefficient of 2 in front of water: SnO2 + H2 → Sn + 2 H2O This puts the hydrogen atoms out of balance. Now there are two hydrogen atoms on the left and four hydrogen atoms on the right. To get four hydrogen atoms on the right, add a coefficient polymath of 2 for the hydrogen gas. Remember, coefficients are multipliers, so if we write 2 H2O it denotes 2x2=4 hydrogen atoms and 2x1=2 oxygen atoms. SnO2 + 2 H2 → Sn + 2 H2O The equation is now balanced. Be sure to double-check your math! Each side of the equation has 1 atom of Sn, 2 atoms of O, and 4 atoms of H. 3.Indicate the physical states of the reactants and products. polymath To do this, you need to be familiar with the properties of various compounds or you need to be told what the phases polymath are for the chemicals in the reaction. Oxides are solids, hydrogen forms a diatomic gas, tin is a solid, and the term 'water vapor' indicates that water is in the gas phase: SnO2(s) + 2 H2(g) → Sn(s) + 2 H2O(g) This is the balanced equation for the reaction. Would you like to see another example of balancing equations?
28th Nov 2009,  polymath 21:14 #6
Hmmm.. payo ko magpaturo ka na lang sa marunong mong classmate. mahirap kasi kung online ka magpapaturo. madali lang yan isa yan. basic yan sa chem. subject. tandaan mo lang dapat same yung amount ng elements sa bawat side
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