Lab 4C

 For Lab 4C, "Determining the Empirical Formula of a Compund", we got an unknown hydrate that filled 1/3 of a crucible. We place the crucible on a pipestem triangle with a bunsen burner underneath it; once the crucible turns dull red with heat, we let it cool for around 5 minutes. After weighing it, we heat it once again for approximately 5 minutes and then determine the mass. We reheat it so that we are sure there is no more water left so the hydrate becomes an anhydrous salt.