. Of much concern to environmentalists is radon-222, which is a radioactive noble gas that can seep from the ground into basements of homes and buildings. Radon-222 is a product of the decay of radium-226 that occurs naturally in rocks and soil in much of the United States. Radon-222, which has a half-life of 3.8 days, decays by emitting an alpha particle. Radon-222, which is a gas, can be inhaled into the lungs where it is strongly associated with lung cancer. Radon levels in a home can be measured with a home radon-detection kit. Environmental agencies have set the maximum level of radon-222 in a home at 4 picocuries per liter (pCi/L) of air.
a. Write the balanced nuclear equation for the decay of Rn-222.
b. Suppose a room has a volume of 72 000 L (7.2 * 104 L). If the radon level is the maximum allowed (4 pCi/L), how many alpha particles are emitted from Rn-222 in 1 day? (1 Ci = 3.7 * 1010 disintegrations/s)
. Of much concern to environmentalists is radon-222, which is a radioactive noble gas that can...
Radon is a radioactive noble gas formed in soil containing radium. Radium-226 decays by emitting a single alpha particle to produce radon-222. Write the nuclear equation for this decay of radium-226.
4. EPA guidelines for the maximum safe level of radon (a naturally occurring radioactive gas) in a home is 4.0 pCi/L (picocuries per liter of air). When a home is tested, a number of measurements are taken and averaged. A homeowner would be concerned if the average radon level is too high.
Radon is a colorless and odorless radioactive gas that can accumulate in residential homes. High levels of exposu is less than 4 pCi/L. A housing development has 108 residential homes. The homeowners association would like sample of 26 homes was selected to be tested, and the average radon level was found to be 1.5 pCi/L. Assume fr a. Construct a 90% confidence interval to estimate the average radon level in the housing development. The 90% confidence interval to estimate the...
Radon (22Rn), a dense, noble gas, is commonly found in basements in some areas of the United States. Radon is a daughter of 238U decay. Which statement about radon is not correct? Select one: a. Radon levels in a basement can be detected and analyzed by radon detectors. b. Radon emits a particles. C. 222Rn, when ingested, changes to polonium (218Po), a solid. This is normally flushed out of the body. d. Radon levels in a basement can be controlled...