EBooks
- Arts & Culture 6209
- Business & Economics 674
- Computers 316
- Dictionaries & Encyclopedias 74
- Education & Science 76877
- Abstracts 73
- Astrology 4
- Biology 8
- Chemistry 4046
- Coursework 15549
- Culture 8
- Diplomas 316
- Drawings 1595
- Ecology 5
- Economy 76
- English 80
- Ethics, Aesthetics 3
- For Education Students 17573
- Foreign Languages 11
- Geography 3
- Geology 1
- History 88
- Maps & Atlases 5
- Mathematics 12624
- Musical Literature 2
- Pedagogics 19
- Philosophy 22
- Physics 15120
- Political Science 5
- Practical Work 59
- Psychology 63
- Religion 4
- Russian and culture of speech 8
- School Textbooks 7
- Sociology 9
- Summaries, Cribs 87
- Test Answers 160
- Tests 8747
- Textbooks for Colleges and Universities 32
- Theses 7
- To Help Graduate Students 14
- To Help the Entrant 38
- Vetting 385
- Works 13
- Информатика 8
- Engineering 893
- Fiction 706
- House, Family & Entertainment 84
- Law 128
- Website Promotion 68
32. Solving a chemistry problem
Sold: 1
Refunds: 0
Uploaded: 06.04.2023
Content: 18.rar 22,19 kB
Refunds: 0
Uploaded: 06.04.2023
Content: 18.rar 22,19 kB
Product description
18. The half-life of the radioactive isotope 90Sr, which enters the atmosphere during nuclear tests, is 28.1 years. Let us assume that the body of a newborn child has absorbed 1.00 mg of this isotope. How much strontium will remain in the body after
a) 18 years old,
b) 70 years, if we assume that it is not excreted from the body?
Additional information
If you do not open the file - install the RAR archiver. Inside the archive you will find a solution in Word format.
Feedback
0| Period | |||
| 1 month | 3 months | 12 months | |
| 0 | 0 | 0 | |
| 0 | 0 | 0 | |