- Arts & Culture 5957
- Business & Economics 689
- Computers 317
- Dictionaries & Encyclopedias 82
- Education & Science 76660
- Abstracts 252
- Astrology 4
- Astronomy 1
- Biology 8
- Chemistry 2649
- Coursework 15782
- Culture 9
- Diplomas 411
- Drawings 575
- Ecology 6
- Economy 82
- English 78
- Ethics, Aesthetics 3
- For Education Students 17629
- Foreign Languages 11
- Geography 3
- Geology 1
- History 89
- Maps & Atlases 5
- Mathematics 13871
- Musical Literature 2
- Pedagogics 19
- Philosophy 23
- Physics 14932
- 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 152
- Tests 9246
- 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 3060
- Fiction 696
- House, Family & Entertainment 107
- Law 133
- Website Promotion 71
118. Solving a chemistry problem
Uploaded: 09.08.2022
Content: 74.rar 49,43 kB
Product description
74. Indicate the features of the method of differential photometry.
For the photometric determination of molybdenum in a mineral with dithiol
a standard solution of ammonium molybdate was prepared by dissolving 0.100 g of it in 500 ml.
An aliquot of the solution (V, ml) after treatment with the reagent was brought to a volume of 50 ml,
photometrically. Measurement data are shown in the table:
V, ml 0.5 1.0 1.5 2.0
D 0.231 0.465 0.690 0.940
Determine the content of MoO3 in the mineral, if a sample of 0.2400 g is taken for analysis,
dissolved in 100 ml. The same reagent was added to an aliquot of it (10 ml), the volume was adjusted to 50 ml, D=0.510.
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 | |