Answer:
177.25g of Cl
Explanation:
First, lets come up with the reaction: Na + Cl --> NaCl
There is a 1:1 ratio between sodium and chlorine. Thus, you need 5 moles of chlorine as well. 5 * Molar mass will you give you the grams needed.
5 * 35.45 = 177.25g of Cl
