1. How many kJ are required to completely vaporize a 250 gram sample of water at 100°C?
general formula

565 kJ

Explanation:

= Heat of vaporization of water at 100°C = 2260 J/g

m = Mass of water = 250 g

Heat required is given by

The heat required to vaporize the water is 565 kJ.

i don't see a text, but i am gonna assume this *orbit* the curved path, usually elliptical, described by a planet, satellite, spaceship, etc., around a celestial body, as the sun.