0.05mol/6M=8.3*10-3 L=8.3mL stock solution c. 100mL-8.3mL=91.7mLwater Add 91.7 water to 6M stock solution to prepare 0.5M acetic acid. Exercise 8: a. 42.35 - 0.55 = 41.8 mL b. The moles of EDTA4- : 0.0189M*(41.8*10-3)L=7.9*10-4mol c. Zn2+(aq)+EDTA4-(aq)—Zn(EDTA)2-(aq) The ratio Zn2+ and EDTA4- is 1:1 The moles of Zn2+= the moles of EDTA4-=7.9*10-4mol d. 7.9*10-4mol*65.39g/mol=0.0517g Zn e.
pyridinium hydrobromide perbromide type of stationary phase column length column temperature rate flow of the carrier gas List the 4 general factors that affect the separation obtained on a gas chromatograph What specific technique is used to collect/isolate your purified unknown compound at the end of the recrystallization experiment? suction filtration 14 of 22 4/16/12 9:15 PM StudyBlue Flashcard Printing of Lab Final 2211L UGA
By Martin Booth. London: Doubleday/ Transworld, 2003, Pp 354, ISBN 0385 603045, £16.99. Hall W, Solowij N. Adverse effects of cannabis. Lancet 1998; 352: 1611–16. Baker D, Pryce G, Giovannoni G, Thompson AJ.
Olanzapine attenuates cue-elicted craving for tobacco. Original investigation, doi:10.1007/s00213-004-1837-3 U.S. Department of Health and Human Services, Agency for Toxic Substances and Disease Registry. (2004). ToxFAQs for Ammonia. Retrieved from
Name that gas. CO2 Results Table 3. Effect of Hypercapnia on Pulmonary Ventilation 0.04% carbon dioxide (normal air) MV pCO2 pO2 pH (L/min) (mmHg) (mmHg) 6.2 39.1 102.7 7.41 6.1 39.3 107.8 7.38 6.1 40.1 102.4 7.4 6.1 39.5 104.3 7.4 4% carbon dioxide pCO2 pO2 (mmHg) (mmHg) 43 102.3 44.4 101.6 42.7 98.1 43.4 100.7 MV (L/min) 10.36 8.74 10.12 9.7 2% carbon dioxide pCO2 pO2 (mmHg) (mmHg) 41.6 100.3 41.6 105.5 42.2 104 41.8 103.3 6% carbon dioxide pCO2 pO2 (mmHg) (mmHg) 47.6 101.2 46.5 99.7 47.3 93.7 47.1 98.2 pH 7.38 7.4 7.38 7.39 Subj. 1 Subj. 2 Subj.
EXPERIMENT 11 Molar Mass of a Volatile Liquid DATA Run | UNKNOW | Mass of flask and foil(g) | 90.085g | Mass of flask and foil and condensed vapor (g) | 90.640g | Temperature of boiling water (˚C ) | 98˚C | Barometric pressure (torr) | 761mm Hg | Volume of flask (mL) | 140 mL | RESULTS Mass of unknown ( condensed vapor) | 0.555g | Volume of flask (vapor)(L) | 0.14 L | Temperature of vapor(k) | 371K | Molar mass of unknown (g/mole) | 118.380 g/mole | Advance Study Assignment 1) How would each of the following errors affect the outcome of this experiment? Would it make the molar mass high or low? Give your reasoning in three sentences or less in each case. a) The hole in the aluminum foil was quite large. if you were to have a larger hole in your aluminum cap, you would be losing vapor to the room.
Synthesis of Methyl Stearate Post-Lab Submitted by Matthew Sharma TA: Evan Determining the Limiting Reagent Methyl Oleate (MW= 296.49 g/mol) Amount used = 1.141g (1.141g)(1mol / 296.49g) = 0.003848 mol ∴ The limiting reagent for the reaction is methyl oleate because hydrogen is used in excess Theoretical Yield Methyl Stearate (0.003848 mol)(298.504g/mol product) = 1.1486 g methyl stearate Percent Yield Given the 1:1 stoichiometry of the reaction: 100% x (0.2551g product / 1.1486g theoretical yield) = 22.2% Conclusion A 22.2% yield of synthesized methyl stearate was obtained via the catalytic hydrogenation of methyl oleate in the presence of the catalyst 10% palladium on carbon. The product
2) Percent recovery for isolation of benzoic acid % Recovery = mass of recovered material _________________________________ x100% mass of starting material = (0.43/1.01) x100% = 42.57% That concludes that the percent recovery is 42,57%. 3) Percent recovery for isolation of hydroquinone dimethyl ether % Recovery = mass of recovered material _________________________________ x100% mass of starting material = (0.16/1.01) x100% = 15.84% That concludes that the percent recovery is 15.84%. Table 2: : Experimental IR peaks compared to literature IR peaks for Benzoic acid Functional groups | Experimental peak (cm-1) | Literature peak (cm-1) | O-H | 3407-2563 | 3400-2564 | C=O | 1689 | 1689 | C-H |
b) Calculate the enthalpy of combustion per gram of each sugar. C6H12O6 + 6O2 --> 6CO2 + 6H2O (-383.5 x 6 + -285.8 x 6) - (-1273) = -2742.8kJ C12H22O11 + 12O2 --> 12CO2 + 11H2O (-383.5x12 + -285.8x11) - (-2221) = -5524.8kJ -2742.8kJ / 180g/mole = -15.24kJ/g -5524.8kJ / 342g/mole = -16.14kJ/g 107. Three common hydrocarbons that contain four carbons are listed here, along wiht their standard enthalpies of formation: Formula Delta H in kJ per mol 1,3-Butadiene C4H6(g) 111.9 1-Butene C4H8(g) 1.2 n-Butane C4H10(g) -124.7 a. For each of these substances, calculate the molar enthalpy of combustion to CO2(g) and H2O(l). b.
5 12WAB10835 Dioxane; 7 123-91-1 GC/FID; CSC 5 12WAB09523 Diphenylamine; 22; Fully Validated 122-39-4 HPLC/UV; Bubbler with Isopropyl Alcohol 5 12WAB10906 Diphenylamine; 78; Fully Validated 122-39-4 HPLC/UV; GFF coated with Sulfuric Acid 5 12WAB10073 Diphenyl; PV2022; Partially Validated 92-52-4 GC/FID; XAD-7 5 12WAB10850 Dipropyl Disulfide; PV2086; Partially Validated 629-19-6 GC/FID; Chromosorb 106 5 12WAB10450 Dipropylene Glycol Methyl Ether; 101; Fully Validated 34590-94-8 GC/FID; CSC 5 12WAB10905 Disulfoton; PV2105; Partially Validated 298-04-4 GC/FPD; OVS-2 5 12WAB11596 Diuron; PV2097; Partially Validated 330-54-1 HPLC/UV; OVS-2 5 12WAR11371 Divinylbenzene; 89; Fully Validated 108-57-6 GC/FID; CSC coated with TBC 5 12WAB10451 Dursban; 62; Fully Validated 2921-88-2 GC/FPD; OVS-2 5 12WAB10449 Endosulfan; PV2023; Partially Validated 115-29-7 GC/ECD; OVS-2 5 12WABI0801 Enflurane; 29; Fully Validated 13838-16-9 GC/FID; CSC 5 12WAB10448 Enflurane; 103; Fully Validated 13838-16-9 GC/FID; Anasorb CMS or Anasorb 747 5 12WAB09860 Epichlorohydrin; 7 106-89-8 GC/FID; CSC 5 12WAB09198 Estradiol; PV2001; Partially Validated 50-28-2 HPLC/UV; GFF 5 12WAB10447 Estriol; PV2001; Partially Validated 50-27-1 HPLC/UV;