Francium is an element with a half-life of 22 minutes. 1000 grams of francium is placed into a bowl determine how much Francium (in grams) will be left after 2 hours

Francium is an element with a halflife of 22 minutes 1000 grams of francium is placed into a bowl determine how much Francium in grams will be left after 2 hour class=