Answered Essay: To learn to balance chemical equations by inspection. According to the law of conservation of

ooo Verizon LTE 6:54 PM 숱session.masteringchemistry.com C Balancing Chemical Equations Learning Goal: To lean to balance chemical equations by inspection. According to the law of conservation of mass, matter cannot be created or destroyed. Therefore, a chemical equation must show the same number of each kind of atom in the reactants as it does in the products. As shown in the figure, the balanced equation 3H2 N2-+2NHs has 6 atoms of hydrogen and 2 atoms of nitrogen on each side of the arrow One is often presented with unbalanced chemical equations for which one must supply the coefficients. 15 a G8 The following equation is not balanced CaSOs +AICl CaCl2 +Al2(SO4) Part A Notice that S04 appears in two different places in this chemical equation. SO polyafomic ion called sulfate. What number should be placed in front of CaSO same total number of sulfate ions on each side of the equation? isa to give the CaSO4 +ACl CaCl +Al2(SO4) ss your answer numerically as an integer Hints Submit My Answers Give Up Part B This question will be shown after you complete previous question(s). Part C This question will be shown after you complete previous question(s). Parts A-C

To learn to balance chemical equations by inspection. According to the law of conservation of mass, matter cannot be created or destroyed. Therefore, a chemical equation must show the same number of each kind of atom in the reactants as it does in the products. As shown in the figure, the balanced equation 3H_2 + N_2 rightarrow 2NH_3 has 6 atoms of hydrogen and 2 atoms of nitrogen on each side of the arrow. One is often presented with unbalanced chemical equations for which one must supply the coefficients. The following equation is not balanced: CaSO_4 + AlCl_3 rightarrow CaCl_2 + Al_2(SO_4)_3 Notice that “SO_4” appears in two different places in this chemical equation. SO^2-_4 is a polyatomic ion called “sulfate.” What number should be placed in front of CaSO_4 to give the same total number of sulfate ions on each side of the equation? ?CaSO_4 + AlCl_3 rightarrow CaCl_2 + Al_2 (SO_4)_3 Express your answer numerically as an integer.

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