|Mass of insulated test tube, spin bar, cyclohexane and |353.25g | | |unknown | | |4. |Mass of unknown |0.15g | A. Warming Curve Data-Pure Cyclohexane |Time |Temp °C |Time |Temp °C |Time |Temp °C |Time |Temp °C | |2.56.30 |6.9 |2.59.30 |6.8 |3.02.30 |6.8 |3.05.30 |7.9 | |2.57.00 |6.9 |3.00.00 |6.9 |3.03.00 |6.9 |3.06.00 |8.2 | |2.57.30 |6.9 |3.00.30 |6.9 |3.03.30 |6.9 |3.06.30 |8.5 | |2.58.00 |6.8 |3.01.00 |6.8 |3.04.00 |7 |3.07.00 |8.9 | |2.58.30 |6.8 |3.01.30 |6.8 |3.04.30 |7.1 |3.07.30 |9.2 | |2.59.00 |6.9 |3.02.00 |6.8 |3.05.00 |7.6 |3.08.00 |9.5 | [pic] 5. Freezing point of pure cyclohexane, from warming Curve is 6.0°C B. Warming Curve Data-Solution Containing Unknown – 941 Trial 1 |Time
(CRITICAL) (HEALTH DEPARTMENT) The actual Walk-in cooler temperature is: Answer A no no 169 176 NO no A 189 A 216 no NO no A -3 A 36 Earned Points/ Possible points 5.0/5.0 NA 5.0/5.0 5.0/5.0 NA 5.0/5.0 5.0/5.0 Page 1 of 6 07/22/2011 07:01:25 www.nsf.org Audit# - Visit # : 579682 - 387583 8 Swamp/Grill freezer temperature should be 0°F (+/- 10°F). (CRITICAL) AUDITOR OBSERVATIONS: U - Swamp/grill freezer temperature out of proper range. Temperature observed at 18F - lunch rush, in and out of freezer REQUIRED ACTION: Check to ensure the equipment is turned on. Check condition of condenser, fan and evaporator. Review stocking procedures, check for good air circulation.
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.
Eighth, and last, I found molecular weight of sugar and diluted it. Data Tables and Observations: Data Table 1: Length measurements. | Object | Length (cm) | Length (mm) | Length (m) | CD or DVD | 5.2 | 52.0 | .052 | Key | 12.0 | 120.0 | .120 | Spoon | 18.6 | 186.0 | .186 | Fork | 21.0 | 210.0 | .210 | Data Table 2: Temperature measurements. | Water | Temperature (°C) | Temperature (°F) | Temperature (K) | Hot from tap | 46 | 114.8 | 319.15 | Boiling | 100 | 212 | 373.15 | Boiling for 5 minutes | 100 | 212 | 373.15 | Cold from tap | 18 | 64.4 | 291.15 | Ice water – 1 minute | 0 | 32 | 273.15 | Ice water – 5 minutes | 0 | 32 | 273.15 | Data Table 3: Mass measurements. | Object | Estimated Mass (g) | Actual Mass (g) | Actual Mass (kg) | Pen or pencil | 5 | 5.4 | .0054 | 3 Pennies | 6 | 7.6 | .0076 | 1 Quarter | 5 | 5.7 | .0057 | 2 Quarters, 3 Dimes | 15 | 18.2 | .0182 | 4 Dimes, 5 Pennies | 15 | 21.6 | .0216 | 3 Quarters, 1 Dime, 5 Pennies | 25 | 31.9 | .0319 | Key | 10 | 9.2 | .0092 | Key, 1 Quarter, 4 Pennies | 20 | 24.9 | .0249 | Data Table 4: Liquid measurements.
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
Measure pure solvent 4. Add the solvent to the cyclohexane 5. Take the temperature of solution before submersion 6. Submerge the test tube in the ice bath and record the temperature every thirty seconds for nine minutes, recording the temperature the solution starts to freeze at. 7.
M5A1 Project 1 Water Balances GEOL108 Earth Science and Societies WATER BUDGET FOR TERRE HAUTE, INDIANA (Figure 2) | J | F | M | A | M | J | J | A | S | O | N | D | P | 7.4 | 6.8 | 9.6 | 9.4 | 10.1 | 10.2 | 8.1 | 8.2 | 8.7 | 6.9 | 8.4 | 7.5 | PE | 0 | 0 | 1.8 | 4.9 | 10.2 | 13.4 | 15.8 | 13.8 | 9.9 | 5.2 | 1.7 | 0.1 | P-PE | 7.4 | 6.8 | 7.8 | 4.5 | -0.1 | -3.2 | -7.7 | -5.6 | -1.2 | 1.7 | 6.7 | 7.4 | Change in ST | 0 | 0 | 0 | 0 | -0.1 | -3.2 | -6.7 | 0 | 0 | 1.7 | 6.7 | 7.4 | ST | 10 | 10 | 10 | 10 | 9.9 | 6.7 | 0 | 0 | 0 | 1.7 | 8.4 | 10 | AE | 0 | 0 | 1.8 | 4.9 | 10.2 | 13.4 | 14.8 | 8.2 | 8.7 | 1.7 | 6.7 | 7.4 | D | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5.6 | 1.2 | 0 | 0 | 0 | S | 7.4 | 6.8 | 7.8 | 4.5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.1 | According to Gildemeister, Berkeley is a west-coast Mediterranean climate (distinct wet and dry seasons). In the late spring and early fall, strong offshore winds of sinking air typically develop, bringing heat and dryness to the area. In the spring, this is not usually a problem as vegetation is still moist from winter rains, but extreme dryness prevails by the fall. The warmest and driest months are typically June through September, with the highest temperatures occurring in September. Mid-summer (July-August) is often a bit cooler due to the sea breezes and fog which are normally most strongly developed then (Gildemeister, 2004, p. 109).
Part I: Density of Unknown Liquid | | Trial 1 | Trial 2 | Trial 3 | Mass of Empty 10 mL graduated cylinder (grams) | 2.56g | 2.55g | 2.60g | Volume of liquid (milliliters) | 8.50mL | 8.80mL | 8.90mL | Mass of graduated cylinder and liquid (grams) | 36.10g/mL | 36.60g/mL | 36.90g/mL | Part II: Density of Irregular-Shaped Solid | Mass of solid (grams) | 41.000g | 38.890g | 42.960g | Volume of water (milliliters) | 50mL | 55.5mL | 53.1mL | Volume of water and solid (milliliters) | 54.9g/mL | 60g/mL | 58.1g/mL | Part III: Density of Regular-Shaped Solid | Mass of solid (grams) | 28.00g | 27.70g | 28.10g | Length of solid (centimeters) | 5.20cm | 5.00cm | 4.50cm | Width of solid (centimeters) | 3.00cm | 4.00cm | 3.50cm | Height of solid (centimeters) | 2.50cm | 3.00cm | 2.00cm | Calculations Show all of your work for each of the following calculations and be careful to follow significant figure rules in each calculation. Part I: Density of Unknown Liquid 1. Calculate the mass of the liquid for each trial. (Subtract the mass of the empty graduated cylinder from the mass of the graduated cylinder with liquid.) * Trial 1 36.10-2.56= 33.54g * Trial 2 36.60-2.55= 34.05g * Trial
Combined Account Statement Statement Period:from Nov 7, 2013 5:00:00 PM through Nov 8, 2013 11:06:18 AM User Name:sajida habib FXCMUK sajida habib house Trade account#:02184120 CLOSED TRADE LIST Ticket # Symbol Volume 3,000 3,000 4 4 4 Date 11/8/13 1:35 AM 11/8/13 2:19 AM 11/8/13 1:40 AM 11/8/13 6:05 AM 11/8/13 2:05 AM 11/8/13 8:15 AM 11/8/13 2:34 AM 11/8/13 5:49 AM 11/8/13 5:51 AM 11/8/13 8:15 AM Sold 1.69969 1.34204 1,311.18 1,309.08 1,311.62 Bought 1.69968 1.33996 1,310.10 1,309.99 1,309.58 Gross P/L 0.03 6.24 4.32 -3.64 8.16 15.11 15.11 Comm 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Rollover 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Adj 0.00 0.00 0.00 0.00 0.00 0.00 0.00 Net P/L Condition Created By d172180780001 d172180780001 d172180780001 d172180780001
In order from top to bottom Lowest MAC to Highest. Ion or Compound Mg/L Aldrin And Dieldrin 0.0007 Mercury 0.001 Benzene 0.005 Cadium 0.005 Lead 0.010 Selenium 0.01 Tolulene 0.025 Arsenic 0.025 Sulfide 0.05 Aluminium 0.01-0.02 Uranium 0.01 Malathion 0.19 Iron 0.3 Fluorine 1.5 Chlorine 250 2. Cadium: MAC=0.005mg/L Equation: (0.005mg/Lx1.5L) x 365 Annual intake= 2.7375 Lead: MAC=0.010mg Equation: (0.010mg/Lx1.5L) x 365 Annual intake= 5.475 Mercury: MAC=0.001mg/L Equation: (0.001mg/Lx1.5L) x 365 Annual intake=0.5475 3.The most important step in water treatment is adding Chlorine to the water. I