Electrical charge of an alpha particle is,

A. +1

B. +2

C. +3

D. +4

Which statement is usually true about the relationship between activation energy and reaction rates? low activation energy barriers result in low rates. high activation energy barriers result in low rates. low activation energy barriers result in no reaction. high activation energy barriers result in no reaction.

The chart shows the bid provided by four contractors to complete a job. which contractor is the most cost-effective?

How does the motion of particles in a gas change as the gas cools