The quantities of iron and copper sulfate used as reactions will be such that the ____ will be in excess. Thus, the _____ will be the limiting factor in determining the number of moles (also known as ______) of products that will be formed.
a. copper sulfate; iron; gram-atoms
b. iron; copper sulfate; mole ratio
c. iron; copper sulfate; molar mass
d. copper sulfate; iron; atomic weight