When a radioactive isotope decays and the resulting isotope is also radioactive, it will decay, and this series will continue until a stable isotope is produced. U-238 undergoes a multistep decay series and one of the isotopes in this series is Rn-222. Rn-222 is radioactive. It has a half-life of 3.8 days. Radon (Rn) is a gas that has a boiling point of -62°C and it is more dense than air. a. If 40 pCi of Rn was in a sealed room, what would the activity be after 38 days? b. Use the information provided about Rn to explain the infographic, namely why Rn emanates from the ground, why concentrations can build up in basements, and why it is the main cause of lung cancer among nonsmokers.

When a radioactive isotope decays and the resulting isotope is also radioactive, it will decay, and this series will continue until a stable isotope is produced. U-238 undergoes a multistep decay series and one of the isotopes in this series is Rn-222. Rn-222 is radioactive. It has a half-life of 3.8 days. Radon (Rn) is a gas that has a boiling point of -62°C and it is more dense than air. a. If 40 pCi of Rn was in a sealed room, what would the activity be after 38 days? b. Use the information provided about Rn to explain the infographic, namely why Rn emanates from the ground, why concentrations can build up in basements, and why it is the main cause of lung cancer among nonsmokers.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

10. What is the thickness of 5.79-mg of gold leaf evenly spread over an area of 44.6 cm² ? (Density of gold is 19.3 g/cm³.) (A) 6.73 x 10-6 cm (C) 6.73 x 103 cm (B) 1.20 x 103 cm (D) 2.78 x 102 cm
1. LBA HO 0 2. 3. H30+
de + NC CN
Solve the following problem: (1.327 x 103 cm)3 = O 2.34 x 10-9 cm3 O 2.337 x 109 cm3 2.3368 x 10-9 cm3 O 2.337 x 109 cm O 2.34 x 10° cm
Every year Every second (1 year 365 days).
Boxes 1-4 box 1 answer choices: 0, 3, 1, 2, or 4. box 2 answer choices: 2, 1, 3, 0, or 4. box 3 answer choices: 10.7, 0.241. 0.482, 0.804, 5.36, 0.121, 3.21, or 1.61. Box 4 answer choices: L^2/mol^2•s, L^3/mol^3•s, L/mol•s, 1/s, or L^4/mol^4•s
minimum 6 sentences Future trends in green chemistry (
A chemist working as a safety inspector finds an unmarked bottle in a lab cabinet. A note on the door of the cabinet says the cabinet is used to store bottles of dimethyl sulfoxide, ethanolamine, tetrahydrofuran, methyl acetate, and diethylamine. The chemist plans to try to identify the unknown liquid by measuring the density and comparing to known densities. First, from her collection of Material Safety Data Sheets (MSDS), the chemist finds the following information: liquid density dimethyl sulfoxide 1.1 mL 1.0 mL ethanolamine tetrahydrofuran 0.89 mL methyl acetate 0.93 mL diethylamine 0.71 mL Next, the chemist measures the volume of the unknown liquid as 1655. cm and the mass of the unknown liquid as 1.55 kg. Calculate the density of the liquid. Round 0g / mL your answer to 3 significant digits. O yes Given the data above, is it possible to identify the liquid? O no O dimethyl sulfoxide O ethanolamine O tetrahydrofuran O methyl acetate O diethylamine If it is possible to identify the…
(2) Draw the (right next splitting patterns to with each for a all unique It's in chemical environment). the molecules below
If the denisty of Platnuim is 19.32 g/cm3 what could the dimnesions of a cube be that weighted 1.00 kilogram.
A A Monate ab 4 Paragraph Help Search (Alt+Q) No Spacing Heading 1 Editing Dictate Sensitivity Voice Sensitwity Styles Two methods of separating an undissolved solid from a liquid are and The method for separating a dissolved solid from the water in an aqueous solution 15 • Using a solvent to dissolve only one substance in a mixture is called 2. A mixture can consist of two or more pure substances. Does that mean a mixture can only consist of elements? 3. Explain your answer to question number 2 4. Oil and water mixed together form a heterogenous or homogenous mixture? 5. 2.000 g of the unknown mixture was placed in an evaporating dish. The empty evaporating dish weighs 38.135 g. After subliming the ammonium chloride from the mixture, the evaporating dish and the remaining mixture weighs 39.775 g. (Put your answer in 3 sig figs and show your work) • What is the weight of the ammonium chloride? • What is the percent of ammonium chloride in the sample? Normal 1. Fill in the following…
The world population is estimated to be 7.4 x 109. Nauru is the smallest island nation and comprises 1.5 x 10-4% of the world population. If the percentage of left-handed people is approximately 12%, estimate the number of left-handers on the island of Nauru.