Homework Answers
1) That's because you want to use the volume of oxygen at the room temperature.
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Questions 1-4
Before reaction: a. unknown number b. weight of beaker, test tube weight of beaker,...
You need to weigh your own large Pyrex test tube and know the empty mass, mass...
You need to weigh your own large Pyrex test tube and know the empty mass, mass with KCIO3 mixture bet heating; mass with KCIO, mixture and catalyst and mass of all of the above after heating. To weigh the test tube, place it in an empty beaker to keep it upright. You may tare the weight of the bea you need to know the weight of the test tube for your calculations. Procedures: Weigh your clean, dry empty Pyrex test...
Name Section Date 、tu ,a Q. READ THE EXPERIMENTAL DISCUSSION FIRST! Complete the data table below using correct significant digits. Show the calculations on a separate page A. Gas Data 1. 2. 3. 4. 5...
Name Section Date 、tu ,a Q. READ THE EXPERIMENTAL DISCUSSION FIRST! Complete the data table below using correct significant digits. Show the calculations on a separate page A. Gas Data 1. 2. 3. 4. 5. Barometric Pressure (torr) Temperature O2 gas Vapor Pressure of Water (torr) (See table in APPENDIX) Volume of O2 gas collected (mL) Dry O2 Pressure (A1-A3)/760.0 768 torr 24.0°C 22.4 torr 354.0 mL atm B. Mass Data Before Reaction 1. Weight of beaker, test tube, KCIO...
PARTI DETERMINATION OF "x" in KCIO DATA Unknown Identification Letter or Number Mass of test tube...
PARTI DETERMINATION OF "x" in KCIO DATA Unknown Identification Letter or Number Mass of test tube + MnO2 1.0979 Mass of test tube + MnO2 + sample Mass of test tube + residue after reaction complete 16.0586g 17-06909 16.5981 DATA ANALYSIS Mass of sample 1.0204g 10.4709 9 Mass of KCI 0.5295 Moles of 02_0.01472 Moles of KCI 0.00238 03 Ratio moles 02/moles KCl (report using correct sp a KCIO (3) Mno, b KCI (8) + O2(g) Coefficients b= KCIO, Subscript...
You are given an unknown containing KClO3. Following the procedure in your manual, you obtain the...
You are given an unknown containing KClO3. Following the procedure in your manual, you obtain the following fictional data Note! For this problem use the given (allbeit incorrect) vapor pressure of water Mass of empty test tube 71.8394 g Mass of test tube + unknown 72.1363 g Mass of test tube + unknown + MnO2 72.3077 g Mass of erlenmeyer flask with residual water 323.06 g Mass of erlenmeyer flask filled with water 358.52 g Atmospheric pressure 760.9 mmHg Temperature...
PARTI DETERMINATION OF "x" in KCIO. DATA Unknown Identification Letter or Number Mass of test tube + MnO2 Mass of...
PARTI DETERMINATION OF "x" in KCIO. DATA Unknown Identification Letter or Number Mass of test tube + MnO2 Mass of test tube + MnO2 + sample in. 1927 129614 1765919 Mass of test tube + residue after reaction complete DATA ANALYSIS Mass of sample_0.76879 Mass of oxygen_0.3075 a Mass of KCI 0.40 a Moles of 02 Moles of KCI Ratio moles 02/moles KCI (report using correct sp) – a KCIO, (s) who; b KCI (S) + CO2(g) Coefficients b= КСІ...
GAS BEHAVIOR Trial 2 Trial 1 I. Data Mass of test tube and contents before heating...
GAS BEHAVIOR Trial 2 Trial 1 I. Data Mass of test tube and contents before heating 44.307 52.046 7.739 afterheating Mass loss 302 44.301 51.223 [6.916 L330 20° 75.94cmHg 17.5 27 Volume of Co, collected , V Temperature of CO,,T Atmospheric pressure 15.104cmling 26.7 Water vapor pressure at Co, temperature II. Calculations Mass of CO, collected Moles of CO2, System temperature (K),T Pressure of CO, (atm) Experimental R = pV/nT Molar Volume Vm = V/n Standard molar volume at STP
GAS BEHAVIOR Trial 1 Trial 2 1. Data Mass of test tube and contents before heating...
GAS BEHAVIOR Trial 1 Trial 2 1. Data Mass of test tube and contents before heating afterheating Mass loss 148.935g 142.1509 148.050 147.2649 322 ml Volume of Co, collected , v Temperature of CO,,T 242 Atmospheric pressure 75.794 75.79 4 cm/HO Water vapor pressure at Co, temperature II. Calculations Mass of CO, collected Moles of CO2, n System temperature (K),T Pressure of CO, (atm) Experimental R = pV/nT Molar Volume Vm = V/n Standard molar volume at STP VII-5
The Atomic Weight of a Metal Data Trial 2 Trial 1 .036a 37.3mL 22.8°C 33.5ml 22....
The Atomic Weight of a Metal Data Trial 2 Trial 1 .036a 37.3mL 22.8°C 33.5ml 22. 2°C 1. Mass of Magnesium (g) 2. Volume of Hydrogen Gas Collected (mL) 3. Temperature (°C) 4. Temperature (K) (show calculation) 5. Barometric Pressure (mm Hg) Height Difference between Water Levels (mm H,O) tin loin Mercury Equivalent of Height Difference Water Difference (show calculation) 13.6 Vapor Pressure of Water (will be given-mm Hg) Pressure of Dry Hydrogen Gas = Barometric Pressure - Mercury Equivalent...
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...
With the data given, help on the calculations please - Tes Name Determination of the Gas...
With the data given, help on the calculations please
- Tes Name Determination of the Gas Constant, R, and the Purity of KCIO, Data Unknown number or letter Mass of test tube and iron (IIT) oxide 44.5928 Mass of test tube, iron (III) oxide and sample 44.979 8 Mass of test tube and contents after heating 44.8488 Volume of water displaced Barometric pressure 976 mbar Temperature of water temperature of O, 23 Vapor pressure of water at this temperature 21.068_mm...
You need to weigh your own large Pyrex test tube and know the empty mass, mass with KCIO3 mixture bet heating; mass with KCIO, mixture and catalyst and mass of all of the above after heating. To weigh the test tube, place it in an empty beaker to keep it upright. You may tare the weight of the bea you need to know the weight of the test tube for your calculations. Procedures: Weigh your clean, dry empty Pyrex test...
Name Section Date 、tu ,a Q. READ THE EXPERIMENTAL DISCUSSION FIRST! Complete the data table below using correct significant digits. Show the calculations on a separate page A. Gas Data 1. 2. 3. 4. 5. Barometric Pressure (torr) Temperature O2 gas Vapor Pressure of Water (torr) (See table in APPENDIX) Volume of O2 gas collected (mL) Dry O2 Pressure (A1-A3)/760.0 768 torr 24.0°C 22.4 torr 354.0 mL atm B. Mass Data Before Reaction 1. Weight of beaker, test tube, KCIO...
PARTI DETERMINATION OF "x" in KCIO DATA Unknown Identification Letter or Number Mass of test tube + MnO2 1.0979 Mass of test tube + MnO2 + sample Mass of test tube + residue after reaction complete 16.0586g 17-06909 16.5981 DATA ANALYSIS Mass of sample 1.0204g 10.4709 9 Mass of KCI 0.5295 Moles of 02_0.01472 Moles of KCI 0.00238 03 Ratio moles 02/moles KCl (report using correct sp a KCIO (3) Mno, b KCI (8) + O2(g) Coefficients b= KCIO, Subscript...
PARTI DETERMINATION OF "x" in KCIO. DATA Unknown Identification Letter or Number Mass of test tube + MnO2 Mass of test tube + MnO2 + sample in. 1927 129614 1765919 Mass of test tube + residue after reaction complete DATA ANALYSIS Mass of sample_0.76879 Mass of oxygen_0.3075 a Mass of KCI 0.40 a Moles of 02 Moles of KCI Ratio moles 02/moles KCI (report using correct sp) – a KCIO, (s) who; b KCI (S) + CO2(g) Coefficients b= КСІ...
GAS BEHAVIOR Trial 2 Trial 1 I. Data Mass of test tube and contents before heating 44.307 52.046 7.739 afterheating Mass loss 302 44.301 51.223 [6.916 L330 20° 75.94cmHg 17.5 27 Volume of Co, collected , V Temperature of CO,,T Atmospheric pressure 15.104cmling 26.7 Water vapor pressure at Co, temperature II. Calculations Mass of CO, collected Moles of CO2, System temperature (K),T Pressure of CO, (atm) Experimental R = pV/nT Molar Volume Vm = V/n Standard molar volume at STP
GAS BEHAVIOR Trial 1 Trial 2 1. Data Mass of test tube and contents before heating afterheating Mass loss 148.935g 142.1509 148.050 147.2649 322 ml Volume of Co, collected , v Temperature of CO,,T 242 Atmospheric pressure 75.794 75.79 4 cm/HO Water vapor pressure at Co, temperature II. Calculations Mass of CO, collected Moles of CO2, n System temperature (K),T Pressure of CO, (atm) Experimental R = pV/nT Molar Volume Vm = V/n Standard molar volume at STP VII-5
The Atomic Weight of a Metal Data Trial 2 Trial 1 .036a 37.3mL 22.8°C 33.5ml 22. 2°C 1. Mass of Magnesium (g) 2. Volume of Hydrogen Gas Collected (mL) 3. Temperature (°C) 4. Temperature (K) (show calculation) 5. Barometric Pressure (mm Hg) Height Difference between Water Levels (mm H,O) tin loin Mercury Equivalent of Height Difference Water Difference (show calculation) 13.6 Vapor Pressure of Water (will be given-mm Hg) Pressure of Dry Hydrogen Gas = Barometric Pressure - Mercury Equivalent...
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...
With the data given, help on the calculations please
- Tes Name Determination of the Gas Constant, R, and the Purity of KCIO, Data Unknown number or letter Mass of test tube and iron (IIT) oxide 44.5928 Mass of test tube, iron (III) oxide and sample 44.979 8 Mass of test tube and contents after heating 44.8488 Volume of water displaced Barometric pressure 976 mbar Temperature of water temperature of O, 23 Vapor pressure of water at this temperature 21.068_mm...
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