Has anyone done these gizmo student exploration stoichiometry activity worksheets if so answers ?

Stoichiometry is the calculation of quantitative relationships between reagents and products in the course of a chemical reaction. These relationships can be deduced from of atomic theory, although historically they were stated without reference to the composition of matter, according to different laws and principles.

The first who enunciated the principles of stoichiometry was Jeremias Benjamin Richter (1762-1807), in 1792, who described stoichiometry as follows:

"Stoichiometry is the science that measures the quantitative proportions or mass ratios of the chemical elements that are involved (in a chemical reaction)."

It also studies the proportion of the different elements in a chemical compound and the composition of chemical mixtures.

A chemical reaction is a process by which a substance is transformed into another by breaking and creating bonds. The reactions are represented in the chemical equations that are made up of reagents and products.

it is b that is the answer.