how much energy is added to a bowl of 125 popcorn kernels in order for them to reach a popping temperature of 175 degreees celsius?

how much energy is added to a bowl of 125 popcorn kernels in order for them to reach a popping temperature of 175 degreees celsius? assume that their initial temperature is 21 degrees celsius, that the specific heat capacity of popcorn is 1650J/kg* and that each kernel has a mass of 0.105g.