Chemistry, 04.08.2020 23:01 glogaming16
Strontium-90 is produced during the nuclear fission of uranium-235 and is part of nuclear fallout created by weapons testing. If the half-life of Sr-90 is 28 days, how long will it take for grass contaminated with Sr-90 to be safe (<2 percent of the starting radioactivity) for cattle to eat?
A. 158 days
B. 28 days
C. 1 year
D. 158 years
Answers: 1
Chemistry, 22.06.2019 00:30
Used the balanced equation 2h2+ o2 - -> 2h2o. if you have 7.2 grams of o2 , how many grams of h2o can you produce ?
Answers: 2
Chemistry, 22.06.2019 02:30
What is the relation between concentration of reactants and the rate of chemical reaction?
Answers: 1
Chemistry, 22.06.2019 12:30
The melting point of sulfur is 115 °c and its boiling point is 445 °c. what state would sulfur be in at 200 °c?
Answers: 1
Chemistry, 22.06.2019 13:30
What are the chemical names of these compounds? ke: mg3n2: reset next
Answers: 1
Strontium-90 is produced during the nuclear fission of uranium-235 and is part of nuclear fallout cr...
Geography, 24.01.2021 22:40
History, 24.01.2021 22:40
Mathematics, 24.01.2021 22:40
Physics, 24.01.2021 22:40
English, 24.01.2021 22:40
SAT, 24.01.2021 22:40
Mathematics, 24.01.2021 22:40