Use logic and simple math to solve this problem. Iron-59 has a half-life of 45 days. It is used to diagnose anemia in human patients. If a lab has a sample of this isotope that has a mass of 84.4mg at the start of an experiment, how much time would need to elapse for only 10.55mg to remain? Show all of your reasoning and calculations. Use the unit conversion method wherever possible. (10 points)