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Student Name Course/Section Date Instructor PRE-LAB ASSIGNMENT 1. A sample of an unknown liquid is vaporized...
Molecular Mass of a Volatile Liquid 1. The atmospheric pressure of a hot summer day in...
Molecular Mass of a Volatile Liquid 1. The atmospheric pressure of a hot summer day in NYC is 29.94 inHg. Calculate this value in mmile and am 2. The atmospheric pressure of a cold winter day in NYC is 25.94 inHg. Calculate this value in Pa. 3. We set up an experiment utilizing the Dumas method to calculate the molar mass of an unknown chemical. A 4.00 mL pure liquid sample of this chemical is vaporized in an Erlenmeyer flask...
Instructor Name: Student Name: DATA (EXP #13): Part 1: The Action of Atmospheric Pressure Observa...
i
need part 2 and part 3 to be solved thanks please please urgent
Instructor Name: Student Name: DATA (EXP #13): Part 1: The Action of Atmospheric Pressure Observations upon immersing the can in ice-water bath: Part 2: Determination of the Molar Mass of Gases Barometric pressure (mmHg): 734.2 mm Room temperature (0 23, 6"c CO2 Natural Gas Mass of flask/stopper filled with air (g) 126 069 125.959 la 0146-16 146.9 Volume of water used to fill flask (mL) 267-nL...
THE MOLAR MASS OF A VOLATILE LIQUID 1. A foil-covered flask was found to have a...
THE MOLAR MASS OF A VOLATILE LIQUID 1. A foil-covered flask was found to have a mass of 161.38 have a mass of 167.38 g. A volatile liquid was placed L00.0°C at a barometric pressure of 743.8 mm Hg. The foil-covered inside and heated to 100.0°C at a barometric press flask containing the vapor had a mass the molar mass of this volatile liquid. 's the vapor had a mass of 167.71 g and a volume of 147.0 mL. Calculate...
PROP0332: Evaluation of the Gas Law Constant Name Section Date Pre-Laboratory Assignment 1. A student following...
PROP0332: Evaluation of the Gas Law Constant Name Section Date Pre-Laboratory Assignment 1. A student following the procedure described in this module collected the following data: 20 mass Mg 8 initial syringe volume, mL final syringe volume, mL barometric pressure, torr temperature, K Calculate the gas law constant. 0.0243 1.0 26.5 754 298 answer 2. What would be the volume of hydrogen gas produced by the reaction of 0.243 g of magnesium metal and collected at 750 torr and 298...
i dont understand why the molecular weight i calculated (42.012 g/mol) for my unknown liquid (acetone)...
i dont understand why the molecular weight i calculated
(42.012 g/mol) for my unknown liquid (acetone) is less than the
actual molecular weight (58.08 g/mol). what errors could i have
made in my lab that would account for the difference.
Molecular Weight of a Volatile Liquid In this experiment, an amount of liquid more than sufficient to fill the flask when vaporized is placed in a flask of measured volume and mass. The flask is then heated in a boiling...
Problems Section 1. A 0.678 gram sample of gas occupies 0.214 L at standard conditions, what...
Problems Section 1. A 0.678 gram sample of gas occupies 0.214 L at standard conditions, what is the molar mass of the gas? PronRT 1 (0,214) = NA 273.15 n = R-273.15 n=104,684 -:675 X=18 2. A sample of gas occupies 250 mL at 37°C and 730. torr, what volume would the gas occupy at standard conditions? ,250L 310k 730 + 20.5 10.0206-310 .216L n=0.0094396539 V nr. 273.15 = 2115 3. A 5.00 mL sample of an unknown liquid is...
please help ? MST SHOW ALL CALCULATIONSs. Please be neat. Use correct significant figures. 1. A...
please help ?
MST SHOW ALL CALCULATIONSs. Please be neat. Use correct significant figures. 1. A student masses an empty flask, aluminum foil (witha small pinhole), and copper wire and finds the mass to be 54.8680 g. She then adds about 5.0 mL of an unknown liquid and heats the flask in a hot waterbath to 95.0 °C. After all the liquid is vaporized, she removes the flask from the bath and masses it after it has cooled. The mass...
Can, anyone make sure these answers are correct? 1. If 0.765g of an unknown gas is...
Can, anyone make sure these answers are correct?
1. If 0.765g of an unknown gas is collected at 741 torr (corrected) and 95°C in a 245 ml container, calculate the molecular weight of this unknown gas? P=741 tona PV=ART -> ideal gas equation n=PU T=95C+243=368K BT mass of the gas = 0.7659 =a41tów 80.245€ R= 62-4L-fowl mol- 624kbar V=245 med 'x 36644 Moler mass of the gos= 0.7659 245L 6 +91-1 60079rmal 2. If in the experiment in Question 1,...
Student Name Course/Section Instructor Date POST LAB QUESTIONS luminum is 0.90 J/g-. How much heat must...
Student Name Course/Section Instructor Date POST LAB QUESTIONS luminum is 0.90 J/g-. How much heat must be added to a 245-gram of this heat is used to heat the aluminum pot containing 556 grams of water to raise l. The spec the temperat pot? 2. For each of the following experimental errors clearly state if the error would increase, decrease, or have no effect on the specific heat that you determined in today's experiment You must explain your reasoning. (e)...
Hi, I need checking on all the work. If anything is wrong then show me step...
Hi,
I need checking on all the work. If anything is wrong then show me
step by step how is done.
11. Obtain a Cu 2 solution of unknown concentration. Write the unknown number on the data sheet. 12. Measure the absorbance of your standard solution, the two dilutions, and the unknown solution. Record these readings on the data sheet. All measurements will be made in the same cuvette and with the instrument set at a wavelength of 630 nanometers...
Molecular Mass of a Volatile Liquid 1. The atmospheric pressure of a hot summer day in NYC is 29.94 inHg. Calculate this value in mmile and am 2. The atmospheric pressure of a cold winter day in NYC is 25.94 inHg. Calculate this value in Pa. 3. We set up an experiment utilizing the Dumas method to calculate the molar mass of an unknown chemical. A 4.00 mL pure liquid sample of this chemical is vaporized in an Erlenmeyer flask...
i
need part 2 and part 3 to be solved thanks please please urgent
Instructor Name: Student Name: DATA (EXP #13): Part 1: The Action of Atmospheric Pressure Observations upon immersing the can in ice-water bath: Part 2: Determination of the Molar Mass of Gases Barometric pressure (mmHg): 734.2 mm Room temperature (0 23, 6"c CO2 Natural Gas Mass of flask/stopper filled with air (g) 126 069 125.959 la 0146-16 146.9 Volume of water used to fill flask (mL) 267-nL...
THE MOLAR MASS OF A VOLATILE LIQUID 1. A foil-covered flask was found to have a mass of 161.38 have a mass of 167.38 g. A volatile liquid was placed L00.0°C at a barometric pressure of 743.8 mm Hg. The foil-covered inside and heated to 100.0°C at a barometric press flask containing the vapor had a mass the molar mass of this volatile liquid. 's the vapor had a mass of 167.71 g and a volume of 147.0 mL. Calculate...
PROP0332: Evaluation of the Gas Law Constant Name Section Date Pre-Laboratory Assignment 1. A student following the procedure described in this module collected the following data: 20 mass Mg 8 initial syringe volume, mL final syringe volume, mL barometric pressure, torr temperature, K Calculate the gas law constant. 0.0243 1.0 26.5 754 298 answer 2. What would be the volume of hydrogen gas produced by the reaction of 0.243 g of magnesium metal and collected at 750 torr and 298...
i dont understand why the molecular weight i calculated
(42.012 g/mol) for my unknown liquid (acetone) is less than the
actual molecular weight (58.08 g/mol). what errors could i have
made in my lab that would account for the difference.
Molecular Weight of a Volatile Liquid In this experiment, an amount of liquid more than sufficient to fill the flask when vaporized is placed in a flask of measured volume and mass. The flask is then heated in a boiling...
Problems Section 1. A 0.678 gram sample of gas occupies 0.214 L at standard conditions, what is the molar mass of the gas? PronRT 1 (0,214) = NA 273.15 n = R-273.15 n=104,684 -:675 X=18 2. A sample of gas occupies 250 mL at 37°C and 730. torr, what volume would the gas occupy at standard conditions? ,250L 310k 730 + 20.5 10.0206-310 .216L n=0.0094396539 V nr. 273.15 = 2115 3. A 5.00 mL sample of an unknown liquid is...
please help ?
MST SHOW ALL CALCULATIONSs. Please be neat. Use correct significant figures. 1. A student masses an empty flask, aluminum foil (witha small pinhole), and copper wire and finds the mass to be 54.8680 g. She then adds about 5.0 mL of an unknown liquid and heats the flask in a hot waterbath to 95.0 °C. After all the liquid is vaporized, she removes the flask from the bath and masses it after it has cooled. The mass...
Can, anyone make sure these answers are correct?
1. If 0.765g of an unknown gas is collected at 741 torr (corrected) and 95°C in a 245 ml container, calculate the molecular weight of this unknown gas? P=741 tona PV=ART -> ideal gas equation n=PU T=95C+243=368K BT mass of the gas = 0.7659 =a41tów 80.245€ R= 62-4L-fowl mol- 624kbar V=245 med 'x 36644 Moler mass of the gos= 0.7659 245L 6 +91-1 60079rmal 2. If in the experiment in Question 1,...
Student Name Course/Section Instructor Date POST LAB QUESTIONS luminum is 0.90 J/g-. How much heat must be added to a 245-gram of this heat is used to heat the aluminum pot containing 556 grams of water to raise l. The spec the temperat pot? 2. For each of the following experimental errors clearly state if the error would increase, decrease, or have no effect on the specific heat that you determined in today's experiment You must explain your reasoning. (e)...
Hi,
I need checking on all the work. If anything is wrong then show me
step by step how is done.
11. Obtain a Cu 2 solution of unknown concentration. Write the unknown number on the data sheet. 12. Measure the absorbance of your standard solution, the two dilutions, and the unknown solution. Record these readings on the data sheet. All measurements will be made in the same cuvette and with the instrument set at a wavelength of 630 nanometers...
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