What kind of charge does a cation have

A cation is a term that indicates a positively charged ion, that essentially results when an electrically neutral atom, loses its electrons, specifically electrons from its outer shell to another atom, primarily for the purpose of ionic bonding. When this occurs, the atom that donated its electrons, now has an indifference of protons and neutrons and this results in a positively charged species.

The answer is c. 320 g

It shows that the experiment is designed properly.