The half-life of a certain radioactive material is 42 days. an initial amount of the material has a mass of 49 kg. write an exponential function that models the decay of this material. find how much radioactive material remains after 8 days. round your answer to the nearest thousandth.

Time remaining 58: 10 an atom that has 84 protons and 86 neutrons undergoes a reaction. at the end of the reaction, it has 82 protons and 84 neutrons. what happened to the atom? it accepted radiation in a chemical reaction it donated neutrons to another atom in a chemical reaction it emitted an alpha particle in a nuclear reaction. it accepted protons in a nuclear reaction. mark this and retum save and exit next submit