Of the following transitions in the Bohr hydrogen atom, the transition results in the emission of the highest-energy photon. a. n = 6 → n = 4
b. n = 2 → n = 7
c. n = 4 → n = 6
d. n = 1 → n = 4

How many grams of mgbr2 are needed to produce 75g or metal?

Which reason best explains why metals are malleable? a)because they have delocalized electrons b)because they have localized electrons c)because they have ionic bonds d)because they have rigid bonds

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)]