Which radioisotope is used in medicine to treat thyroid disorders?
(1) cobalt-60 (3) phosphorus-32
(2) iodine-131 (4) uranium-238

Using the periodic table, complete the table to describe each atom. type in your answers

Mike and mitchell decide to have a foot race. they mark off a stretch of 100 yards, and recruit cindy to work the stopwatch. after running the race and looking at the results, cindy declared that mitchell was the fastest. so how did the boys times compare?

How many moles of oxygen react with 12 moles of aluminum