210Pb has a half-life of 22.3 years and decays to produce 206Hg. If you start with 10.0 g of 210Pb, how many grams of 206Hg will you have after 80.8 years

1. explain hydrogen peroxide, h 2 o 2 properties and decomposition reaction. 2. describe how each of the following natural cycles plays a part in earth’s climate system. (a) the water cycle (b) the carbon cycle

One way that radioactive waste is treated is by burying it in repositories. the repositories are found only in states with very low populations. true or false? a. trueb. false(also i meant to put high school but it put down middle school instead)

Melissa is interested in her family tree and how her family has changed over its many generations. melissa probably more closely resembles