physical

phenol.......

2 temprature

urotropine not phenol

q2) temp

but ans for 2nd given is nature of the reactants ,is that right,,,,,,

n show me the reactioni n 1st

yaa 2nd answer is

nature of the reactants

because the energy of activation is always dependent on the nature of the reactants.....

1....It is a colourless solid, of maximum theoretical density 1.82 g/cm³. It is obtained by reacting concentrated nitric acid with hexamine.

(CH2)6N4 + 10HNO3 → (CH2-N-NO2)3 + 3CH2(ONO2)2 + NH4NO3 + 3H2O

It is a heterocycle and has the molecular shape of a ring. It starts to decompose at about 170 °C and melts at 204 °C. Its structural formula is: hexahydro-1,3,5-trinitro-1,3,5-triazine or (CH2-N-NO2)3.

[3][3][3][3][3][3][3][3][3][3][3][3][3][3][3][3][3][3]

ya it depends on nature of reactants......