Please help explain, thanks The Delta H lattice of MgF2 is 2962 kJ. What is delt

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Please help explain, thanks

The Delta H lattice of MgF2 is 2962 kJ. What is delta H for the reaction Mg(s) + F2(g) right arrow MgF2(s)? Mg(s) right arrow Mg(g) delta H = 148 kJ F2(g) right arrow 2F (g) delta H = 159 kJ Mg(g) right arrow Mg+(g) + e^- delta H = 738 kJ Mg'(g) right arrow Mg^2+ (g) + e^- delta H = 1450 kJ F(g) + e^- right arrow F^-(g) delta H = -328 kJ 2962 kJ -1450 kJ -1123 kJ 1123kJ 2962 kJ Which of the lists of compounds below does NOT satisfy ALL of the following criteria? includes two compounds with only ionic bounds AND includes one compound with only covalent bonds AND includes one compound with a combination of ionic and covalent bounds K2NO3, CsF, BeO, CO_2 NaCl, NH3, NH4OH, MgO CH4, CaS, RbI, Al2(SO4)3 LiF, KH2PO4, SrO, N2 Br2, KBr, H2O, Ba, Se A student in lab produced 5.795 g of alum (KAI(SO4)2 . 12 H2O; MW = 474.41 g/mol) from 0.5327 g of solid Aluminium (Al). what was her percent yield of alum? 2 Al(s) + 2 KOH(aq) + 6H2O(l) rightarrow 3 H2(g) + 2 KAI(OH)4(aq) KAI(OH)4(aq) + 2H2SO4(aq) + 2 H2 O(l) rightarrow KAI(SO4)2. 12 H2O(aq) (alum) 9.27% 30.7% 38.7% 61.3% 122.7%

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Please help explain, thanks The Delta H lattice of MgF2 is 2962 kJ. What is delt

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