Question

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4 In the following chemical reaction. Balance the molecular equation by adding coefficient. Write the net ionic equation by adding phases. Do not write ionic Eq (4 pts) Molecular Eq.: Al(OH), (aq) + HNO, (aq) + - Al(NO) (aq) + HO (1) Net ionic Eq. 5 Determine the oxidation number of the element in the following ions or compounds (1 pt each) a) CIO; CI - b) SO, S = c) PbO Pb- 6 Determine if the following compounds are soluble or insoluble in aqueous solutions.cl pt cach) a) K PO _ b) CaCO, c) Agi 7 Following Reaction is given when zinc reacts with sulfur to form ZnS. Zn (s) + S(s) - ZnS Determine the limiting reactant when 6.361 g of Zn react with 5.451 g of sulfur (S) to produce ZnS? Show all calculation steps by using conversion factors and units. (4 pt) Srep 1: Mole of ZnS from (g) of Zn Step 2: Mole of ZnS from (g) of S mole of ZnS produced is Limiting reactant is: a) Calculate the theoretical yield (mass) of ZnS formed in the above reaction. Show all steps of calculation by using conversion factors and units. (2 pts) b) If the actual mass of ZnS produced is 5.912g. Calculate percent yield of this reaction (2pts) Show Formula and Calculation steps.

Answer 1

Molecula Al(OH)₂ (aq) + 3 HNO₂ (aq) AL(NO3)3 (aq). + 3H2OLL) Net sonic: 3 он (ол) + зн*taa) — ЗНО (0) 2. (а) соо (Б) so1 (c) Pь о, — — х+ 3 = 2) = -1 - 0 = +5 + 31- 2) = -д - [s = +4 + (-2) = 0 . [Pь = 41