EBooks
- Arts & Culture 6213
- 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 129
- Website Promotion 68
146. Solving a chemistry problem
Uploaded:
08.05.2022
Content: 23.rar 25,83 kB
Content: 23.rar 25,83 kB
Product description
23. The molar coefficient of light absorption of the complex [MoO (SCN) 5] 2- in isoamyl alcohol at λeff = 475 nm is equal to 1.50 * 10 ^ 4. Calculate the minimum mass fraction (%) of molybdenum in the soil, which can be determined by this method, if from the sample of soil weighing 20.00 g, molybdenum is recovered in 200.0 ml of oxalate buffer solution. 150.0 ml of filtrate are taken and, after appropriate treatment, the resulting [MoO (SCN) 5] 2 - 15.00 ml of isoamyl alcohol is extracted. The extract is photometered in a cuvette with l = 3.0 cm. The minimum optical density is 0.020.
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 | |