Based on location in the periodic table, which element has chemical properties that are most similar to iodine xenon (Xe)
calcium (Ca)
Selenium (Se)
fluorine (F)

What does the mass of 0.7891 mol of ferric oxide (fe2o3)

Asolid that forms and separates from a liquid mixture is called

Suppose that some of the compound spilled out of the crucible after it was heated. would that cause the percent by mass of water in the compound determined by the experiment to be too low, too high, or unchanged? briefly explain your answer.