What fraction of molecules in a gas at 300 K collide with an energy equal to activation energy of `50KJ//mol`?

What is effect of catalyst on energy of activation (E_1) .

The mean energy of a molecule of an ideal gas is

When the displacement in S.H.M. IS 1/3 ^rd of the amplitude. What fraction of total energy is kinetic energy and what fraction is potential energy ?

Assertion : The total translational kinetic energy of all the molecules of a given mass of an ideal gas is 1.5 times the product of its pressure and volume. Reason : The molecules of gas collide with each other and the velocities of the molecules chane due to the collision.

The half life of a first order reaction is 900 min at 820 K.Estimate its half life at 720 K if the energy of activation of the reaction is 250 kJ mol^(-1)

What is the free energy change in dissolving one mole of NaCl with its lattice energy and hydration energy of -777.8 kJ mol^-1 and -774 kJ mol^-1 respectively at 25^@ C ? (Given: DeltaS=0.043 kJ K^-1 mol^-1 )