Chemistry, 06.12.2020 01:00 Serenitybella
Half-life is defined as the amount of time, often in years, that it takes for a radioactive substance lo low
of its radioactivity. If a substance has a half-life of 58 years and starts with 500 grams radioactive, then how
much remains radioactive after 30 years? Round to the nearest gram.
Answers: 3
Chemistry, 22.06.2019 07:30
11. phosphorus-32 is radioactive and has a half life of 14 days. how much of a 124 mg sample of phosphorus-32 is present after 56 days? a) 7.75 mg b) 15.5 mg c) 31.0 mg d) 62.0 mg
Answers: 3
Chemistry, 22.06.2019 21:20
The organs inside the body and how they function together
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Chemistry, 23.06.2019 01:20
How can parts of a solution be separated by chromatography?
Answers: 1
Chemistry, 23.06.2019 03:00
In november 1987, a massive iceberg broke loose from the antartic ice mass and floated free in the ocean. the chunk of ice was estimated to be 98 mi long, 25 mi wide, and 750 ft thick. a typical backyard swimming pool contains about 24,000 gallons of water. how many of these pools could you fill from the water in this iceberg? (assume the iceberg is a rectangular solid of the above dimensions and consists of water only). express answer in scientific notation.
Answers: 3
Half-life is defined as the amount of time, often in years, that it takes for a radioactive substanc...
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