In the gas phase , methyl isocyanide( CH3NC) isomerizesto methyl cyanide (CH3CN) in a first order reaction with arate constant of 7.70x10*-4 S*-1 at 500 k . an experiment is performed where 25.0 torr of methyl isocyanide isplaced in a 23.2 L container at 500 K.after 520 second , what is the pressure of methylcyanide?what is the half life of the reaction for the starting concetration of methyl isocyanide? what is the total pressure in the reaction vessel after5 20s? The activation energy for this reaction is 161 kj/mol. what is the rate constant at 300 k?