- Arts & Culture 5945
- Business & Economics 689
- Computers 315
- Dictionaries & Encyclopedias 81
- Education & Science 76124
- Abstracts 252
- Astrology 4
- Astronomy 1
- Biology 8
- Chemistry 2330
- Coursework 15648
- Culture 9
- Diplomas 411
- Drawings 574
- Ecology 6
- Economy 82
- English 76
- Ethics, Aesthetics 3
- For Education Students 17613
- Foreign Languages 11
- Geography 3
- Geology 1
- History 89
- Maps & Atlases 5
- Mathematics 13871
- Musical Literature 2
- Pedagogics 19
- Philosophy 23
- Physics 14874
- Political Science 5
- Practical Work 101
- Psychology 60
- Religion 4
- Russian and culture of speech 8
- School Textbooks 7
- Sexology 42
- Sociology 9
- Summaries, Cribs 87
- Test Answers 150
- Tests 9242
- Textbooks for Colleges and Universities 32
- Theses 24
- To Help Graduate Students 14
- To Help the Entrant 37
- Vetting 364
- Works 13
- Информатика 10
- Engineering 3062
- Fiction 696
- House, Family & Entertainment 107
- Law 132
- Website Promotion 71
71. When determining lead in an alloy, the calibration
Refunds: 0
Uploaded: 05.08.2019
Content: 71.rar 16,28 kB
Product description
71. When determining lead in an alloy, the calibration graph method was used, which was built according to the following data:
Conc. standard solution of lead μg / ml 2.0 4.0 6.0 8.0 10.0
Atomic absorption at 283.3 nm 0.160 0.320 0.480 0.640 0.800
A portion of the alloy weighing 0.5000 g was dissolved in a mixture of acids and transferred to a volumetric flask with a capacity of 250.00 ml. Before analysis, the solution was diluted 20 times. The atomic absorption of this solution is 0.500. Determine the mass fraction of lead in the alloy.
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
0Period | |||
1 month | 3 months | 12 months | |
0 | 0 | 0 | |
0 | 0 | 0 |