Why did the beaker most likely feel warm

Arollercoaster car at the top of a hill has potential energy kinetic energy chemical energy light energy

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

According to the valence shell electron pair repulsion (vsepr) theory, a molecule that has four electron groups around the central atom will exhibit what electron geometry? view available hint(s) according to the valence shell electron pair repulsion (vsepr) theory, a molecule that has four electron groups around the central atom will exhibit what electron geometry? trigonal bipyramidal tetrahedral square planar determination of electron geometry requires information on whether the electron groups are lone pairs or bonding groups.