Describe an experiment to show water is an oxide to hydrogen

Which of these expressions are correct variations of the combined gas law? p1v1t2 = p2v2t1 both

What is a possible quantum number set for an electron in the 3s orbital of a magnesium atom

Clyde and marilyn are riding a roller coaster. during which section(s) of the track is their potential energy converted to kinetic energy? a. from point b to point c only b. from point b to point d only c. from point a to point b only d. from point a to point b and from point c to point d