mostlylexi mostlylexi 08-12-2022 Chemistry contestada NEED GELP ASAP FINAL EXAM If you have 100g of a radioactive isotope with a half life time of 2 hours, how much of the radioactive isotope will be left after 2 hours? a. about 600g b. about 1.6g c. about 6400g d. about 16.5g