25. a)

i)Predict the period, group and block to which element with atomic number 37 and 113

belongs. [D]

ii)An element with atomic number112 has an electronic configuration{Rn}5f14 6d10 7s2

Identify period ,group and block.

The activation energy for this reaction is 75 kj·mol–1. the enzyme catalase (found in blood) lowers the activation energy to 8.0 kj·mol–1. at what temperature would the non-catalyzed reaction need to be run to have a rate equal to that of the enzyme-catalyzed reaction at 25°c?