If a catalyst is used in a reaction,

a. the energy of activation increases.

b. different reaction products are obtained.

c. the reaction rate increases.

d. the reaction rate does not change

What is relief and how does it affect soil formation

What element would be sidekick of fluorine and its enemies?

Bromine is part of what special group on the periodic table? a. actinides b. alkaline earth metals c. halogens d. metalloids

N2 (g) + 3H2 (g) = > 2NH3 (g) + energy. Certain conditions provide less than 10% yield of NH3 at equilibrium. Which statement describes this equilibrium? The Keq is large and products are favored. The Keq is small and products are favored.

How many electrons does N5 + have

A fog over a lake. what two changes of state must occur to produce the fog? do the water molecules absorb or release energy during these changes of state? what happens to the motion of the water molecules as a result?

Limes have a [H3O+] of 1.3 x 10-2 mol/L. Their pOH is

The human body is 0.0040% iron. How many milligrams of iron does a 165 pound person contain?

Which of the following is the correct Lewis structure for ammonia (NH3) ? Note: Hydrogen and nitrogen have one and five valence electrons respectively.

Which of the following statements is true? A. Particles of a solid have a very orderly, three dimensional arrangement and do not move B. Particles of a liquid change shape and volume C.