An element with 2 Valence electrons is called a (n) alkaline metal
earth alkaline metal
metalloid
halogen
noble gas

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

How many moles are contained in 5.6 l of h2 at stp

A40 kilogram skier starts at the top of a 12 meter high slope. at the bottom, she is travelling 10 meters per second. how much energy does she lose to friction