emiroblox896 emiroblox896 28-04-2021 Chemistry contestada A sample of polonium-210 has an initial mass of 390 milligrams (mg). If the half-life of polonium-210 is 36 days, how many mg of the sample remains after 72 days? A. 392 mg B. 195 mg C. 97.5 mg D. 48.75 mg