What happens when three Atoms of hydrogen form propanes as their displaced by 3 OH radicals?

Balance this equation co2(g) + h2o (g) show that the balanced equation obeys the law if conversation of mass

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

Amixture that has two or more substances that are spread out evenly is called a. compound b. heterogeneous c. substance d. homogeneous