Balancing Chemical Equations (answer part B)

Learning Goal: Part A 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 Notice that "SO4" appears in two different places in this chemical equation. SO4is a polyatomic ion called "sulfate." What number should be placed in front of CaSO4 to give the same total number of kind of atom in the reactants as it does in the products. As shown in the figure, the sulfate ions on each side of the equation? balanced equation 3H2 + N2-2NH3 has 6 atoms of hydrogen and 2 atoms of nitrogen on each side of the arrow. ?CaSO4 + AlCl3 -CaCl2 + Al2 (SO4)3 3 H2 N2 2 NH3 Express your answer numerically as an integer. H H View Available Hint(s) H H H H ? =3 H H Submit Previous Answers H One is often presented with unbalanced chemical equations for which one must Correct supply the coefficients. Part B Now that we have put a coefficient of 3 in front of CaSO4, what coefficient should go in front of CaCl2 to balance calcium (Ca)? 3CaSO4 + AlCl3-?CaCl2 + Al2 (SO4)3 Express your answer numerically as an integer. View Available Hint(s) ? = Submit