Reaction rates are affected by concentration, collision geometry, and the presence of a catalyst. which of the following statements is false concerning these factors? increasing the concentration of reacting particles increases the chance for collisions. a catalyst lowers the activation energy requirement. a reaction occurs each time particles of the reactants collide. the slowest reaction involved in a reaction mechanism determines the rate of overall reaction.

Answer:  A reaction occurs each time particles of the reactants collide.

Explanation:

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.

kelp are large brown algae that live in cool, relatively shallow waters close to the shore. they grow in dense groupings much like a forest on land. these underwater towers of kelp provide food and shelter for thousands of fish, invertebrates, and marine mammal species.

e) all of the above