Please show all steps to get to final answer!
 What are the atomic number, mass number, and element formed when polonium-218 emits a beta particle? What are they if the polonium emits an alpha particle?
 The isotope cesium-137 has a half-life of 30 years. It is a by product of nuclear power plants. How long will it take this isotope to decay to 1/16 of its original amount?
 A certain radioactive substance has a half-life of 1 hour. If you start with a 1024 g sample at noon, how much is left at 3:00 PM? At 6:00 PM? At 10:00 PM?
 Some asteroid fragments end up on the surface of Earth. These fragments can be radioactive. What is the chief cause of radioactivity? Given a radiation detector that can ONLY measure the amount of radiation, how could you determine which type of radiation was being emitted?
 In nuclear fission and fusion reactions mass is converted into energy. The average person in US uses around 100,000,000 J of energy per year.
(a) Calculate the yearly energy consumption for a US population of 300 million.
(b) Using Einstein's famous formula, E = m c^2, calculate the energy that would be released if a 60 kg person were converted entirely into energy.
(c) How many years would this amount of energy support a population of 300 million?
 The isotope lithium-7 has a mass of 7.0160 amu, and the isotope lithium-6 has a mass of 6.0151 amu. 92.58% of all lithium atoms found in nature are lithium-7 and 7.42% are lithium-6. Use this information to calculate the atomic mass of lithium.
 You are given samples of the elements argon, bromine, and sulfur. Which of these elements is most similar to chlorine? Defend your answer using your knowledge of the periodic table.
 What is the formula for the ionic compound formed by each pair of ions?
K+ and Cl?
Mg2+ and Cl?
Mg2+ and Se2?
Mg2+ and N3?
Al3+ and S2?
State on Texas is within the bounds of the United States. Dallas is within the bounds of State of Texas. Irvin is within the bounds of Dallas.
Please show all steps to solving this problem. I didnot get an answer yesterday.
Please show all steps to resolve this problem. A farmer has 100 acres of land on which she plans to grow wheat and corn.
Please show all steps to get to final answer!  What are the atomic number, mass number, and element formed when polonium-218 emits a beta particle?...