Chemical bonds are made and broken by:

a. energy changes

c. chemical reactions

b. enzymes

d. catalysts

Which best defines pressure? A. a measure of the number of particles in a unit area B. a measure of the force of the collision of particles on a unit area C. a measure of the number of particles on the outside of a container D.

Why would a crash involving cars going faster do more damage than a crash going slow? explain using terms kinetic and potential and inertia. Science

What is the formula for chlorine monoxide?

What is the total number of atoms in a molecule in pi3

A conjugate base is the species that a. remains after a base has given up a proton. b. is formed by the addition of a proton. c. is formed by the addition of a proton to a base. d. remains after an acid has given up a proton.

For the reaction n2 (g) + 2h2 (g) â n2h4 (l), if the percent yield for this reaction is 77.5%, what is the actual mass of hydrazine (n2h4) produced when 27.70 g of nitrogen reacts with 4.45 g of hydrogen?

A Which landmasses show evidence of ancient glaciers?

What is the molarity of a solution containing 5.0 moles of kcl in 2.0 l of solution?

Compare the electron configurations of hydrogen, lithium, and sodium. Why do you think these elements are grouped in the same family?

What is the theoretical yield of silver chloride?