Name the compounds or give the formula. And indicate the type of bonding (i. e., ionic, covalent, both): a) Br2Cl7

b) Gold (III) hydroxide

c) CuCrO4

d) Ammonium phosphate

Consider the reaction: 2al(s) + fe2o3(s) → al2o3(s) + 2fe(s) the δhf for fe2o3(s) = -824.3 kj/mole. the δhf for al2o3(s) = -1675.7 kj/mole. finish the equation. δhrxn = [(1)( kj/mole) + (2)( kj/mole)] - [(1)( kj/mole) + (2) ( kj/mole)]