Fant A A 50 kg laboratory worker is exposed to 20 mJ of beta radiation. What is the dose equivalent in mrem? Express your answer in millirems. AEd ? DE= mrem Submit Request AnswerV PartA The radium isotope \"Ra, an alpha emitter. has a halflife of 11.43 days. You happen to have a 1.0 g cube of 223133.. so you decide to How long will it take the water to boil? use it to boil water for tea. You ll a well-insulated container with 500 ' mL of water at 16\" and drop in the cube of radium. Express your answer with the appropriate units. e a o r R_equest Answer Fant A The half-life of Co is 5.27 years. The activity of an "Co sample is 4.20*109 Bq. What is the mass of the sample? Express your answer with the appropriate units. View Available Hint(s) HA m= Value Units Submit Previous Answers