Chemistry, 17.09.2019 22:00 proutyhaylee
Radioactive decay can be described by the following equation where is the original amount of the substance, is the amount of the substance remaining after time , and is a constant that is characteristic of the substance. for the radioactive isotope chromium-56, is . if the original amount of chromium-56 in a sample is 68.1 mg, how much time is needed for the amount of chromium-56 that remains to fall to 31.9 mg?
Answers: 3
Chemistry, 21.06.2019 14:20
Which is true of chemicals? a. things containing chemicals always cost a lot of money. b. chemicals are never dangerous. c. chemicals are in many substances in a home. d. chemicals are rarely found on earth.
Answers: 1
Chemistry, 22.06.2019 21:30
Harry lives in a city, and he has a lung condition known as asthma. on certain days, harry has to stay inside because pollutants in the air make it difficult for him to breathe. which of these pollution sources are nonpoint sources that might bother harry if he goes outside? choose the two that apply.
Answers: 3
Chemistry, 23.06.2019 00:30
On the periodic table, elements are arranged by which of the following. a. mass numbers. b. increasing atomic number. c. alphabetical order. or d. density
Answers: 1
Radioactive decay can be described by the following equation where is the original amount of the sub...
Business, 31.10.2019 21:31
Mathematics, 31.10.2019 21:31
Spanish, 31.10.2019 21:31
Biology, 31.10.2019 21:31
Biology, 31.10.2019 21:31
English, 31.10.2019 21:31
Mathematics, 31.10.2019 21:31
Computers and Technology, 31.10.2019 21:31
Biology, 31.10.2019 21:31
History, 31.10.2019 21:31
Mathematics, 31.10.2019 21:31