The distance between two static charges is tripled, by what factor is the magnitude of the electric force changed​

t.                 w               e                 n                   t                 y                 c             h               a           r           a               c                 t             e             r             s        

atomic = no of protons.

mass number-atomic number = neutron number

answer: 802.3 kilo joules of energy represents 191.75 kilo calorie of energy.

explanation:

energy released during combustion of one mole methane = 802.3 kilo joules

if 1 kilo joule = 0.239006   kilo calorie

then ,802.3 kilo joule will be = 802.30.239006 kilo calorie

802.3 kilo joule = 191.75 kilo calorie

hence, the energy in kilo calorie is 191.75 kilo calorie.