A system gains 687 kJ of heat, resulting in a change in internal energy of the system equal to +241 kJ. How much work is done?

Which diagram shows the correct way to represent an ionic compound of magnesium oxide?

Draw a line graph showing the relationship between temperature in kelvin as a function of kinetic energy.

How is electrolysis most commonly used to produce an energy source? a - splitting water molecules produces oxygen, which organisms breathe to fuel their bodies. b - splitting water molecules produces hydrogen gas, which is used to power machines through hydrogen fuel cells. c - splitting carbon dioxide molecules produces coal, a form of carbon that can be burned to produce heat. d - splitting carbon dioxide molecules produces natural gas, which can be burned to generate electricity in power plants.