Which point has the coordinates of -2.5 5.5

It's the point that's 2.5 units to the left of the y-axis and 5.5 units above the x-axis.  (right there on the picture of the graph that you're hiding from us)

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.

the electric field is a “force field” around a charged object that illustrates the direction the electric force would push an imaginary