- Arts & Culture 5932
- Business & Economics 680
- Computers 310
- Dictionaries & Encyclopedias 81
- Education & Science 75714
- Abstracts 252
- Astrology 4
- Astronomy 1
- Biology 8
- Chemistry 2221
- Coursework 15444
- Culture 9
- Diplomas 411
- Drawings 574
- Ecology 5
- Economy 83
- English 75
- Ethics, Aesthetics 3
- For Education Students 17597
- Foreign Languages 11
- Geography 2
- Geology 1
- History 89
- Maps & Atlases 5
- Mathematics 13850
- Musical Literature 2
- Pedagogics 19
- Philosophy 23
- Physics 14817
- 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 9243
- Textbooks for Colleges and Universities 32
- Theses 24
- To Help Graduate Students 14
- To Help the Entrant 37
- Vetting 362
- Works 13
- Информатика 10
- Engineering 3059
- Fiction 696
- House, Family & Entertainment 107
- Law 132
- Website Promotion 71
48 (1). To build a calibration curve in the coordinates
Refunds: 0
Uploaded: 05.08.2019
Content: 48--1.rar 15,32 kB
Product description
48 (1). To build a calibration curve in the coordinates Aorn-C Mn, 11.00 12.00 13.00 14.00 15.00 ml of a standard solution containing 1.25 mg / ml Mn was placed in measuring flasks with a capacity of 250.0 ml and oxidized to permanganate . The optical density was measured relative to a solution containing 12.5 mg of Mn in 250.0 ml and received:
Vst, ml 11.00 12.00 13.00 14.00 15.00
Aoth 0,200, 0,400, 0,600 0,800 1,010
A portion of the ore weighing 0.5000 g was dissolved and the solution was diluted to 1000 ml. Manganese was oxidized to 50.0 ml of the filtrate to permanganate and diluted to 250.0 ml. Measured relative optical density, as in the construction of the calibration curve. Calculate the mass fraction of manganese in the ore samples if the values Anx = 0.320 are obtained for them
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 |