1) Half reactions: For the given formula what is the oxidation and reduction. 3 Mg + N2 Mg3N2 2)If 90.0 mL of 0.150 M CaCl2 is added to 40.0 mL of 0....

1) Half reactions: For the given formula what is the oxidation and reduction.3 Mg + N2 → Mg3N22)If 90.0 mL of 0.150 M CaCl2 is added to 40.0 mL of 0.100 M AgNO3, what is the mass in grams of AgCl precipitate?3)Iron(II) can be oxidized by an acidic K2Cr2O7 solution according to the net ionic equation.Cr2O72− + 6 Fe2+ + 14 H+ 2 Cr3+ + 6 Fe3+ + 7 H2OIf it takes 50.0 mL of 0.0250 M K2Cr2O7 to titrate 30.0 mL of a solution containing Fe2+, what is the molar concentration of Fe2+?