Use of a Graduated Cylinder Trial 1 Trial 2 Trial 3 Mass of graduated cylinder C64.107 864.063 804.079B 103.105 btragt 103-034, 839.55SE Mass of graduated cylinder + water (03.877 103.105-4,l7 38938 39.814 Mass of water 40.5 Volume of water 40.1 41 cm3 C cm³ DENSITY OF WATER g/cm³ 3 g/cm3 g/cm³ AVERAGE DENSITY OF WATER g/cm³ 3 STANDARD DEVIATION g/cm³ 7 PERCENT ERROR
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Pls help me with the density of water, average density of water, standard deviation, and percent error
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- Estimate the Km and vmax from the data. [S] (M) Velocity (µM/min) 2.5 x 10-6 28 .00001 70 .00004 112 .0001 128 .002 139 .01 140 Km=.00001 vmax=140 Km=.002 vmax=112 Km=.01 vmax=140 Km=.00001 vmax=70Express [O3] = 2.0 x 1012 molecules cm-3 as a volume mixing ratio (ppbv) at 25 ºC, 1 atm.Gas chromatography was used to analyse for residues of toxic solvents, including benzene and 1,2-dichloroethane (DCE), in a pharmaceutical preparation. The following conditions were used: Column: 30 m long capillary with polysiloxane stationary phaseCarrier gas: He at 35 cm s–1 constant flowOven program: 40 °C at t = 0, increasing at 10 °C min–1 to 240 °C at t = 20 min. Detector: flame ionisation (FID) Benzene eluted with retention time = 11.5 min, peak width = 0.26 min 1,2-dichloroethane (DCE) eluted with retention time = 11.8 min, peak width = 0.28 min (i) What are the strengths and limitations of the flame ionisation detector in this application, compared with other possible methods of detection? (ii) What is the resolution, RS, for the separation of benzene and DCE on this column? (iii) Suggest two ways by which the resolution of benzene and DCE might be improved. Explain your choices.
- An Ostwald viscometer was used to determine the time of flow of syrup at 20 °C. Data for Water:Time of flow: 0.23 secondsDensity at 20 °C: 0.998 g/cm³Viscosity: 0.0101 poiseData for Syrup:Time of flow: 1.42 secondsDensity at 20 °C: 1.153 g/cm³ 1. What is the fluidity of water? 2. From the computed viscosity of syrup, what will be its kinematic viscosity? 3. From the computed viscosity of syrup, what will be its fluidity? 4. What is the viscosity of syrup? 5. What is the kinematic viscosity of water?Substances A and B with capacity factors 6.3 and 11.4, respectively, are being carried by a mobile phaseflowing at a velocity of 0.53 mm/s. What is the length of a column required to separate these two substanceswith a resolution of 1? Assume that the sample zones for both A and B broaden based on the van Deemter equation H = 0.35 + 0.48/u+ 0.57u where Hand u are expressed in µm and mm/s, respectively.Perform the following calculation: negative 0.00030 fraction numerator g over denominator C presuperscript ring operator thin space cross times c m cubed end fraction cross times 30.0 thin space degree C What is the answer to the calculation above with the correct units and significant figures? Group of answer choices -0.0090 ???3 g c m 3 -0.009000 ???3 g c m 3 -0.00900 ???3 g c m 3 -0.009 ???3
- A researcher wants to calculate the flux of palm oil (PO) in a simulated body fluid (SBF). To perform the experiment, he designed a 30 cm capillary tube. At the very beginning of the tube, he designed a partition with a separator as shown in the figure below. He filled the partition with a stock solution prepared by solving 10 g of PO in a liter of SBF and the capillary tube with pure SBF. Then he removed the separator. The viscosity of the BSF is 3.6x10-3 Pa.s and molecular weight of PO is 850.92.a. Calculate the flux of PO in kg mol/s.m2 at steady state. (Use Polson equation for diffusivity.) (Assume the temperature is maintained at 37oC during whole experiment.)b. Concentration of PO at the half of the tube."F0rmat: Giv3n: Requir3d: Equati0n: Soluti0n: Answ3r:The following molarities were calculated from replicate standardization of a solution: 0.5006, 0.5003, 0.5023, 0.5009, 0.5015, 0.5013, and 0.5022 M. Assuming no determinate errors, what is the upper limit of the 95% confidence interval?
- Calculate the following exercise with correct sig figs: ((2.9365mL - 3.00mL)/3.00mL)x100%What is the actual or real-life application of volatilization gravimetry? Include the specific methodology.Module Code & Title: CHM9011M Chromatography and Sep Sciences Section 1: Purpose Clarity of Purpose ): Clearly states the purpose of the SOP. Relevance to Task : Demonstrates the importance and relevance of the procedure. Alignment with Goals ): Shows how the procedure aligns with organisational goals.