If a dose with an activity of 2.55 mCi of 123I is given to a patient for a thyroid test, how much of the 123I will still be active 48 hours later?

Why do scientists look for patterns in the world? a. patterns can explain observations. b. patterns never change, no matter what. c. patterns are easy for scientists to detect. d. patterns are all the same, through all time.

Select all that apply. a beta particle: is electromagnetic energy is an electron has zero charge is emitted from the nucleus has a +2 charge has a -1 charge

How many moles of oxygen gas are produced from the decomposition of six moles of potassium