In the reaction h2 + n2 > 2 nh3, what coefficient should be placed in front of h2 to balance the reaction? a. 1 b. 2 c. 3 d. no coefficient is needed.

Why are gamma rays not affected by a magnet as they pass over it? gamma rays are composed of only energy. gamma rays do not have enough mass to be affected. gamma rays do not have the right electrical charge to be affected. gamma rays move too fast for anything to affect their pathway.

Easy definition for atom and atomic mass

Which statement describes covalent bases? they have hydroxide ions. they produce hydrogen ions. they are often amines. they are named the same as ionic compounds.