2. which of the following best defines a scientific theory?
a. a well-established, highly-reliable explanation of a natural event
b. a preliminary guess or idea about an event in nature.
c. a true statement about an event in nature.
d. a well-established principle that does not include an explanation.

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.

8.98 dm3 of hydrogen gas is collected at 38.8 °c. find the volume the gas will occupy at -39.9 °c if the pressure remains constant.

Answer explain why it is not possible to deduce a complete order of reactivity.