Pressure and volume changes at a constant temperature can be calculated using
a. boyle s law.
c. kelvin s law.
b. charles s law.
d. dalton s law.

It can be calculated using Boyle's Law.  A.

This is what i found on google “according to the collision theory, the following criteria must be met in order for a chemical reaction to occur: molecules must collide with sufficient energy, known as the activation energy, so that chemical bonds can break. molecules must collide with the proper orientation.” i hope this information you.