The half-life of iodine-131 is 8 days. How many milligrams of iodine-131 remain after 24 days if the original amount was 4.00 mg?
A. 0.444 mg
B. 0.667 mg
C. 0.500 mg
D. 1.33 mg

What substance has a mass of 9.5g and volume of 2.1cm^3

Does the number of ions in solution increase, decrease, or remain constant? it continuously decreases. it continuously increases. it decreases at first, then increases. it increases at first, then decreases.

How many moles of no2 will form when 3.3 moles of cu are reacted with excess hno3?