Which expression represents a reaction rate?

A. time/mass

B. number/time

C. energy/time

D. time/energy

Define the following terms. a. law of conservation of mass

What is the primary function of neurons?

Electrons are transferred in the bonds. Formulas A) ionic B) covalent C) metallic D) all chemical

Covalent bonds are formed when electrons are shared between two atoms transferred from one atom to another mobile within a metal captured by the nucleus

Atomic radii decrease, moving from left to right across a period. As a result, the electrons become closer to the nucleus.

According to the octet rule most elements need_valence electrons.

What is the average speed of particle in a gas at room temperature? Why is temperature an important variable?

An electron is in a region outside the nucleus. An electron a) Is larger than a proton and has no charge b) Has less mass than a proton and has a negative charge c) Is smaller than a proton and has no charge d) Has a positive charge

Under conditions of "feasting", the body favors oxidation/utilization of which source for energy production

2.17 in to 10^23 molecules of Br 2 to moles