Calculate actual volume delivered for #3 Class A 25 mL Pipette CalibrationCalibrationMass of WaterActual VolumeInitial Mass, gFinal Mass, gDelivered, gDelivered, mL172.7297.5924.8769.5294.6325.11370.5395.3024.772.

Data given: Calibration # Initial mass, g Final mass, g Mass if water delivered, g Actual volume…

Answered: Class A 25 mL Pipette Calibration…

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter32: Gas Chromatography

Section: Chapter Questions

Problem 32.15QAP

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(This question and the next 2 questions are breakdowns of the same question) A student John wanted to measure the molar mass of an unknown material (UM) via the boiling point change of a solvent. He chose a solvent, ethanol, that can dissolve the material and sugar. He wanted to use sugar (MW = 342.3 g/mol) as a reference sample to get an ebullioscopic constant for his system to reduce the effect of other measuring errors such as pressure, measuring errors, and impurity of the samples. He made 10 solutions each contain 100 g of ethanol and various amont of solute as list in the table. He fits the two sets of data and obtain the molar weight of the unknown materials. For this question answer the fitted boiling point of pure ethanol: ____ K. 4 sig. fig. Thre rest ? marks in the tale will be answered in the next two questions. Copy the data into Excel and use trendline to fit or calculate the average values for this and the next 2 questions. Sample # Sugar (g) B.P. (K) Sample # UM…
The following molarities were calculated from replicate standardization of a solution: 0.5022, 0.5022, 0.5021, 0.5008, upper limit of the 95% confidence interval?
Determine the specific gravity of the gas in TABLE 1. Note: Convert the weight fraction to mole fraction first and state your assumptions.
The following molarities were calculated from replicate standardization of a solution: 0.5021, 0.5015, 0.5035, 0.5007, 0.504, 0.5025, and 0.5008 M. Assuming no determinate errors, what is the upper limit of the 95% confidence interval?
What is Mole-Fraction?
ITEMS USED FOR EXPERIMENT: •Ring stand •Hot plate •125 mL Erlenmeyer flask•400 mL beaker•10 mL graduated cylinder •Aluminum foil•Rubberband•Paper Clip•Thermometer•Vial containing unknown liquid You know have the following data: Mass of flask + foil + rubberband: 78.637 gMass of flask + foil and rubberband+ unknown condensed liquid: 78.847 gTemperature of water bath: 100C = 373 KPressure of gas in our system: 29.02 inHg = 0.9699 atmVolume of gas in our system: 141 mL = 0.141 L 1. During the experiment, you collect the following data: Mass of flask: 80.001 g Mass of flask + unknown condensed liquid: 80.452 g Temperature of water bath: 100 °C Pressure of gas in our system: 0.998 atm Volume of gas in our system: 265 mL Which of the following number(s) need a conversion before they can be used? (Check all that apply) [ ] Group of answer choices [ ] Volume of gas in our system [ ] Mass of flask [ ] Temperature of water bath [ ] Pressure of gas in our system [ ] Mass of flask +…
I am allowed to work with someone I just don’t understand this Using the Volumetric Pipet Data from Part C calculate the 10. Average experimental density of the three samples of saline
The molar mass of a liquid is determined by the Dumas method. How is the calculated molar mass of the liquid affected - too high, unaffected or too low, if the student assumed the volume of the flask was 150ml ( as marked on the side of the flask) rather than measuring the volume experimentally ?
Calculate the gravimetric factor of: FeO in Fe2O3 Bi2S3 in BaSO4 BaSO4 in (NH4)2SO4 Mn2O3 in Mn3O4 NOTE: Present complete solution and include the detailed computation of the molecular weight. Express your final answers up to FOUR decimal places.
I am allowed to work with someone I just don’t understand this Using the Volumetric Pipet Data from Part C calculate the 12. Percent error between the known density (from data A) and the average experimental density (from calc 10).
desired Mg mass =0.0340g "Atmospheric pressure (mmHg): 733.59Trial 1 and Trial 2 values separated by commas:Mass of Mg (g): 0.038, 0.031Temperature (°C): 20.2 (both trials)Vapor pressure of water (mmHg): 17.86 (both trials)Volume of gas (mL): 42.95, 35.80 need calculations for table.
Show complete solutions and enclose all final answers in a box. Round off final answers to 4 decimal places and use floating values for intermediate answers. A gas column is separated into two segments by a non-permeable partition. On the first segment is 1.63 moles of Helium with volume V1 and on the second segment is 3.84 moles of Oxygen gas with volume V2. Consider both gases to be ideal and at the same pressure P and temperature T. If the partition is removed, calculate the change in entropy of the gaseous system.

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Class A 25 mL Pipette Calibration Actual Volume Mass of Water Delivered, g Calibration Initial Mass, g Final Mass, g #3 Delivered, mL 1 72.72 97.59 24.87 69.52 94.63 25.11 3 70.53 95.30 24.77