The orbits of the planets in our Solar System: a. have a wide range of inclinations. b. all proceed in the same direction. c. have semimajor axes that follow a regular, repeating pattern. d. imply that the planets formed elsewhere and were captured by the Sun’s gravity.

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.

305.7

explanation:

density =m/v

density =917/3.00

density = 305.

approximately = 305.7

in four significant figures