Apiston in a heat engine does 500 joules of work, and 1,400 joules of heat are added to the system. determine the change in internal energy and explain how this example demonstrates the conservation of energy.

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

The bond energy for the van der waals bond between two helium atoms is 7.9×10−4ev. assuming that the average kinetic energy of a helium atom is (3/2)kbt, at what temperature is the average kinetic energy equal to the bond energy between two helium atoms

Phosphorous can form an ion called phosphide, which has the formula p3−. this ion can form an ion called phosphide, which has the formula p3−. this ion properties very similar to those of pforms when a phosphorus atom loses three protonsis called a cationcontains 18 electrons