- Arts & Culture 6212
- 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
9. Solution to Chemistry Problem
Content: 1.docx 15,29 kB
Product description
1. Calculate the percentage of manganese in steel using the following data obtained under the specified conditions. A 0.2000 g sample of steel was dissolved in nitric acid. Then manganese was oxidized with ammonium persulfate (in the presence of Ag). Phosphoric acid was added to the solution and the solution was diluted to 200.0 cm3. Photometry was carried out by comparison with a standard and zero solution, using the differential method. The standard solution contained 20 mg Mn in 1 dm3. The zero solution was a 0.0050 N solution of KMnO4, with an optical density value equal to 0 with a fully open diaphragm of the FEK-M colorimeter. In relation to the zero solution, Ast = 0.26; Ax = 0.14.
Additional information
If you cannot open the file or have any problems, do not rush to leave a negative review! Contact me and I will quickly help you solve the problem. After purchasing, please leave a positive review of the product :)
Feedback
0| Period | |||
| 1 month | 3 months | 12 months | |
| 0 | 0 | 0 | |
| 0 | 0 | 0 | |