Radioactive plutonium-239 1t1 2 5 2.44 3 105 yr2 is used in nuclear reactors and atomic bombs. If there are 5.0 3 102 g of the isotope in a small atomic bomb, how long will it take for the substance to decay to 1.0 3 102 g, too small an amount for an effective bomb?

Chapter 9 from “Introductory Chemistry” by Zumdahl and Decoste, 7 /8 editionth Pg 203. INFORMATION GIVEN BY CHEMICAL EQUATIONS *Coefficient in a balanced equation give us the relevant number of molecules Note: we need to focus on the ratio of coefficients not the specific coefficients themselves Ex: The ratio of item when making a sandwich is: 2 bread slices + 3 meat slices + 1 cheese slice...