How does the addition of an enzyme to a chemical reaction affect the equilibrium constant of the reaction? I. increase
II. decrease
III. no effect
IV. cannot be determined

c-14 is carbon-14, or radiocarbon.   it is a radioactive isotope of carbon with an atomic nucleus containing 6 protons and 8 neutrons.

(b) which contains higher levels of vitamin b, oranges or spinach?

explanation:

you can eliminate a, c, and d because they are questions based on opinions.

the objects have the same charge is correct.

nathan lee