Failing The Pre-Lab To Formula Of a Hydrate

Before the Formula of a Hydrate lab, we were instructed to find the ratio of anhydrate salt to the amount of water driven off. I understood the question and the math but I didn't set it up correctly which destined me for failure. Instead of doing the lab and heating the salt to drive the water off, my lab partner and I were given the data and we performed the calculations from there. It was not very fun to fail the lab so I went and studied this website which helped me a ton.