CHEM 297 Study Guide - Final Guide: 5,6,7,8, Absorbance, Sector Mass Spectrometer

35 views1 pages

bluewoodchuck782

23 Feb 2016

School

Department

Course

Professor

For unlimited access to Study Guides, a Grade+ subscription is required.

Document Summary

Pg 3, 4, 5 (know the picture), 6, 13-16 (know example from these slides), 18 (know picture), 21 (know picture), 24, 25. 5, 6, 7, 8, 9(know the fingerprint), 13, 14, 18, 23, 24, 25, 26. 10, 11(example), 14 (know the advantages), 15, 16, 17. 4 (know exact mass), 6 (resolution), 7, 9, 10, 14 (lc-ms, esi, apci), 15-22, 23-26 (know the example), 27-30. Know the detectors, so gc, lc (ionization sources (ei,cl)), sector instrument, quadriople, tof (time of flight), icp (sample intro,sample prep) For each detector, know each pro and cons of individual detectors and how they work, and why one dectector is preferred over another one when given a sample to check (difference between hard and soft) Ms, be familiar with the style of the case studies. He will most definitely have one question on that.

Related Questions

Mass of beaker: 59

Mass of beaker and citric acid: 61

Mass of beaker and citric acid (after cooling): 61.06 or 61.1

Volume of NaOH: 15mL

Syringe Reading, mL	Citric acid added, mL	pH
30	2	11.20
28	3	10.81
27	4	10.21
26	5	10.
25	6	9.58
24	7	8.35
22	9	7.02
20	11	6.72
19	12	6.68
18	13	6.39
17	14	6.12
16	15	5.77
15	16	5.72
14	17	5.66
13	18	5.22

Syringe Reading, mL	Citric acid added, mL	pH
30	1	11.24
29	2	10.78
28	3	10.48
27	4	10.12
26	5	9.92
25	6	9.82
24	7	7.96
23	8	7.46
21	10	6.83
19	11	6.75
18	12	6.65
17	13	6.21
16	14	5.82
15	15	5.63
14	16	5.42

Mass of citric acid: 2g

Moles of citric acid: 0.0104

(MW = 192.0 g/mol)

Molarity of citric acid: 0.104M

(volume of solution = 100 mL)

Trial 1 equivalence point: 10+7=17/2= 8.5

Trial 2 equivalence point:10+7=17/2=8.5

Molarity (Trial 1):

Molarity (Trial 2):

Average Molarity:

I need help calculating the molarity of the citric acid per trial, please help and show work.

Is it possible to make some predictions about protein secondary structure based on the primary sequence. Consider the following amino acid sequence: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 Ile-Ala-His-Thr-Tyr-Gly-Pro-Phe-Glu-Ala-Ala-Met-Cys-Lys-Trp-Glu-Ala-Gln-Pro-Asp-Gly-Met-Glu-Cys-Ala-Phe-His-Arg A) Where might Beta-Turns occur? B) Where might intrachain disulfide cross-linkages be formed? C) Assuming that this sequence is part of a larger globular protein, what is the probable location (exterior or interior of the protein) of the amino acid residues: Asp Ile Thr Ala Gln Lys Explain your reasoning.

From the data below:

a. Show the first and second derivative plots of from all 3 parts of acids titrated

b. calculate the concentration of HCL (part B) from the data and titration curve.

Part A (HCl) Part B (KHP) Part C (diprotic acid)

Volume	pH	Volume	pH	Volume	pH
0	1.57	0	4.17	0	2.69
1	1.6	1	4.28	0.2	2.71
2	1.62	2	4.38	0.5	2.76
3	1.64	3	4.47	0.8	2.79
4	1.66	4	4.56	1	2.83
5	1.68	6	4.73	1.4	2.89
6	1.7	8	4.86	1.8	2.94
7	1.72	10	4.98	2	2.99
8	1.74	12	5.09	2.5	3.05
9	1.76	14	5.22	3	3.2
10	1.78	15	5.27	3.2	3.25
11	1.81	16	5.32	3.4	3.29
12	1.83	17	5.4	3.8	3.34
13	1.87	18	5.45	4	3.42
14	1.9	19	5.51	4.2	3.52
15	1.92	20	5.56	4.6	3.59
16	1.95	21	5.63	4.8	3.72
17	1.99	22	5.7	5	3.78
18	2.02	22.5	5.74	5.2	3.89
18.5	2.04	23	5.77	5.4	3.97
19	2.06	23.5	5.82	5.6	4.05
19.5	2.09	24	5.87	5.8	4.16
20	2.11	24.5	5.92	5.9	4.23
20.5	2.13	24.6	5.93	6	4.29
21	2.15	24.7	5.94	6.2	4.33
21.5	2.18	24.8	5.95	6.5	4.48
22	2.21	24.9	5.96	6.6	4.52
22.5	2.26	25	5.97	6.8	4.62
23	2.28	25.1	5.98	6.9	4.67
23.5	2.3	25.2	5.99	7.1	4.71
24	2.34	25.3	6	7.4	4.8
24.5	2.37	25.4	6.01	7.6	4.9
25	2.41	25.5	6.03	7.8	4.96
25.5	2.45	25.6	6.04	8	4.99
26	2.49	25.7	6.06	8.2	5.04
26.5	2.54	25.8	6.07	8.4	5.11
27	2.62	25.9	6.09	8.8	5.2
27.25	2.66	26	6.11	9	5.27
27.5	2.68	26.5	6.17	9.2	5.31
27.75	2.71	27	6.24	9.4	5.36
28	2.76	27.5	6.34	9.6	5.41
28.1	2.79	28	6.46	9.8	5.49
28.2	2.8	28.5	6.61	10	5.57
28.3	2.82	28.6	6.66	10.2	5.65
28.4	2.85	28.7	6.71	10.4	5.69
28.5	2.87	28.9	6.76	10.6	5.77
28.6	2.88	29	6.84	10.8	5.84
28.7	2.9	29.1	6.88	11	5.91
28.8	2.93	29.2	7.06	11.2	6.05
28.9	2.95	29.3	7.15	11.4	6.15
29	2.98	29.4	7.24	11.6	6.3
29.1	3.02	29.5	7.49	11.8	6.53
29.2	3.06	29.55	7.65	12	7.02
29.3	3.08	29.6	7.93	12.1	8.4
29.4	3.12	29.65	8.56	12.2	9.2
29.5	3.15	29.7	9.15	12.5	10.58
29.6	3.2	29.75	9.47	12.8	10.74
29.7	3.25	29.8	9.64	13	11.02
29.8	3.29	29.9	9.81	13.2	11.13
29.9	3.37	30	9.95	13.5	11.29
30	3.48	30.1	10.08	14	11.43
30.2	3.58	30.2	10.19	14.5	11.52
30.2	3.76	30.3	10.34	15	11.6
30.3	4.09	30.4	10.44	15.5	11.65
30.4	4.75	30.5	10.53	16	11.71
30.5	5.1	31	10.82	16.5	11.76
30.6	8.48	31.5	11	17	11.8
30.7	9.28			17.5	11.84
30.8	9.67			18	11.87
30.9	9.82			18.5	11.91
31	10.04			19	11.94
31.1	10.2			20	11.99
31.2	10.32			20.5	12.01
31.3	10.45			21	12.03
31.4	10.56			22	12.07
31.5	10.62
31.6	10.67
31.7	10.7
31.8	10.77
31.9	10.81
32	10.94
32.1	10.98
32.2	11

CHEM 297 Study Guide - Final Guide: 5,6,7,8, Absorbance, Sector Mass Spectrometer

Document Summary

Get access

Related textbook solutions

Chemistry: Structure and Properties

Basic Chemistry

Principles of Chemistry Molecular Approach

Principles of Chemistry Molecular Approach

Chemistry: Structure and Properties

Chemistry: A Molecular Approach

Chemistry: A Molecular Approach

Principles of Chemistry: A Molecular Approach

Chemistry: The Central Science

Related Documents

H Midterm: 7

CHEM 102 Midterm: CHEM 102 TAMU keeney Exam 1ab-Fall 10

CHEM 1A Study Guide - Midterm Guide: Selenide, Iodate, Persulfate

Related Questions