Suppose that two students perform a gas law experiment multiple times, resulting in the average PV products reported here. Student A 1.19 x 106 + 350000 Pa-mL Student B 1.2 x 106 + 22000 Pa-mL The more precise work was done by Choose... - because v Choose... that student has fewer significant figures reported in their average. that student's data has a larger standard deviation. that student's data has a smaller standard deviation. that student found a higher average PV product.

Suppose that two students perform a gas law experiment multiple times, resulting in the average PV products reported here. Student A 1.19 x 106 + 350000 Pa-mL Student B 1.2 x 106 + 22000 Pa-mL The more precise work was done by Choose... - because v Choose... that student has fewer significant figures reported in their average. that student's data has a larger standard deviation. that student's data has a smaller standard deviation. that student found a higher average PV product.

Appl Of Ms Excel In Analytical Chemistry

2nd Edition

ISBN:9781285686691

Author:Crouch

Publisher:Crouch

Chapter2: Basic Statistical Analysis With Excel

Section: Chapter Questions

Problem 12P

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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).
PV = nRT. The pressure is 0.9912atm. V = 50.5 mL. T = 21.5°C and n = 0.00200mol. Calculate R from this data in Latm/molK.
I am allowed to work with someone... 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)
In Part B, you used a similar procedure to that of Part A to determine the mass percent of CaCO3 in an antacid tablet. The commercially accepted range of CaCO3 in an antacid tablet is 25–35% by mass. Miranda obtained the data below from her Part B trial: TRIAL PRESSURE (torr) MASS OF TABLET (g) TEMPERATURE (°C) VOLUME CO2 RECOVERED (mL) 1 750.5 0.5702 21.3 69.6 2 750.5 0.5622 21.2 68.2 Miranda determined her average % Recovery of CO2 to be 65.0% from Part A. Based on her data collected from Part A, was the average percent mass of CaCO3 in her antacid tablet within the commercially accepted range? Yes, her mass percent does fall within the commercially accepted range. No, her mass percent does not fall within the commercially accepted range.
A student obtained an average PV value of 42,000 in column ( of the data table. If the syringe had een able to be adjusted to a volume of 35.0 mL, what would the pressure be inside the flask? emember that PV = k and the volume you used includes the flask as well as the syringe. Given that the volume of the flask and the syringe is 553. Round to the correct sig figs.
1) Mass of flask, aluminum foil, and rubber band 68.45g 2) Temp. Of boiling, water 98.20 0C 3) Barometric pressure 755 mmHg 4) Volume of flask (volume of vapor occupies flask) 152 ml 5) Mass of flask, aluminum foil, rubber band, and condensed vapor 68.60g 6) Mass of condensed vapor is (5)-(1) Find Molecular weight of unknown ______ g / mol Calculation PV = (m/M)RT) è M = (mRT) / PV = ? Unknown liquid- Based on Molecular weight determine which unknown below has this molecular weight: Methanol, Ethanol, Isopropanol, Propanol. UNKNOW IS : __________________________
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Chemistry The levels of an organic pollutant (P) in the groundwater at the perimeter of a plant were a cause for concern. A 10 mL sample of the water was taken and the pollutant was extracted with 95% efficiency using 25 mL of diethyl ether. GC was used to analyse the concentration of P in diethyl ether. A calibration curve was plotted for a series of standards of P which yielded the following results: Peak Area Toluene Conc. (µg/ml) 12,000 2.6 23,700 5.0 35,500 7.7 46,800 9.9 31,250 Sample Determine the concentration of P in ppb in the initial groundwater sample.
where did the mean ratio emerge from?
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