The energy transferred between samples of matter because of a difference in their temperatures is called

Heat is energy in transit, that is, transfer of (thermal) energy from one body or system to another.

In other words, when you have two bodies with different temperatures and thermal energy is transferred from one body to another, implying a high speed and kinetic energy in the particles involved, we are talking about heat.

When both bodies or the complete system reaches the thermal equilibrium (they are at the same temperature) the process is over and there is no heat.

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.