Change these word equations into formula equations and balance them. Be sure to use the proper symbols to indicate the state of each substance as given. Do not add conditions above the arrow. (a) Magnesium metal is placed into hydrobromic acid solution, forming hydrogen gas and aqueous magnesium bromide. Mg(s) + 2 HBR (aq) rightarrow MgBr_2(eq) + H_2(g), (b) When heated, solid calcium chlorate decomposes into cateium chloride solid, releasing oxygen gas. Ca(ClO_3)_2(s) rightarrow CaCl_2(s) + 3O_2(g) (c) Solutions of barium bromide and sodium phosphate combine to form solid barium phosphate and aqueous sodium bromide. 3 BaBr_2(aq) + 2Na_3 PO_4(eq) rightarrow Ba_3 (PO_4)_2(s) + 6 NaBr_(aq) (d) Solutions of silver nitrate and aluminum iodide are mixed together, forming solid silver iodide and aqueous aluminum nitrate 3 AgNO_3(aq) + AlI_3(aq) rightarrow 3 AgI_(s) + Al (NO_3)_3(aq)