Homework Answers
Question 1
With the help of mass only, we can find moles then only we can calculate the molar mass of CO2,
Therefore, we need mass of air, inside the flask.
Calculation is shown below
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B. QUESTIONS. Show your work for full credit. 1. Why was it important to determine the...
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...
Date Data Sheet Section Code Table 10.1. Mass, pressure, temperature, and volume measurements. Unknown Number: 924...
Date Data Sheet Section Code Table 10.1. Mass, pressure, temperature, and volume measurements. Unknown Number: 924 Runi Run 2 Run 3 Estimated Error Mass of flask and foil (g) 72.22 72.25 Mass of flask, foil, and condensed vapor (g) 72.39 1241 Temperature of boiling water bath (°C) 100 °C 100°C Volume of Alask (mL) ML 154mL Barometric pressure (mmHg) 754.1754) Room temperature (°C) 22.0021°C Vapor pressure at room temperature (mmHg) 100 °C 100C A student neglected to measure the volume...
The steps just refer to the lab procedure and the ones present are where data is...
The steps just refer to the lab procedure and the ones present
are where data is actually recorded. The rest, like step 5, are
things like fill the flask with water and wipe away any excess. All
needed info for the calculations is there. I'm trying to
double-check my work.
DATA & CALCULATIONS: Measured quantities that were the same for all three runs: 138.5 mL Volume of flask Laboratory temperature Atmospheric pressure Density of air 29.82 inches Hg 1.189 g/L...
Mass of stoppered flask + air + tape (record all digits from balance) ISLcBS 22 C...
Mass of stoppered flask + air + tape (record all digits from balance) ISLcBS 22 C 151.70es 22 Air temperature 151.Blo4 S1.8744 Mass of stoppered flask and CO2 (gas) + tape 23 °C °C Temperature of CO: (gas) torr Barometric pressure 204 49 mL Volume of water in flask (= Vgas) g/mL Density of air (from CRC Handbook) Mass of air in flask Calculating ngas Mass of EMPTY stoppered flask + tape Mass of CO2 in flask K K Temperature...
A student designed his experiment based on Dumas method to determine the molecular 5 Pts mass...
A student designed his experiment based on Dumas method to determine the molecular 5 Pts mass of an unknown volatile liquid and tabulated the data obtained from his cxpcriment. From the given data calculate the Molar mass of the unknown liquid and percent error if the accepted molar mass is Y g/mol. Q8. Mass of flask, boiling stone, foil cap, & unknown liquid after cooling Mass of flask, boiling stone and foil cape Water bath temperature Barometric pressure Volume of...
In an experiment like this one using H2O2 and FeCl3 the following data was collected: (1)...
In an experiment like this one using H2O2 and FeCl3 the following data was collected: (1) Volume of water displaced 350 mL mass of flask before reaction 72.317 g. (2) Temperature of water (and gas) 23 degrees C mass of flask after reaction 71.879 g. (3) Atmospheric pressure 750 mmHg. (a.) What is the volume of the gas at STP conditions? (b.) What is the molar volume of the gas?
A student determined the molar volume of CO2 gas using the procedure described in this experiment?...
A student determined the molar volume of CO2 gas using the procedure described in this experiment? He collected the following data. mass of empty Mylar balloon and fastener,g 3.03 mass of Mylar balloon, fastener, and CO2 gas, g 3.99 volume (capacity) of Mylar balloon, mL 1730 barometric pressure, in. Hg = 28.96 laboratory temperature, C = 22 a)express the pressure in atmospheres. [Note: 1 atm = 29.92in. Hg] b)express the temperature in Kelvin c)express the volume of the balloon in...
i just wanna double check whether i answered correct or not please. Why do we measure...
i just wanna double check whether i answered correct or not
please.
Why do we measure the volume of the flask in this experiment with water rather than using the volume listed on the side? Select all correct answers that apply. Must include all correct answers for full credit. The volume is not accurate on a flask to the number of significant figures required for this experiment The volumetric markings on the flask do not extend to it's full height...
Part 1. The air in a bicycle tire is bubbled through water and collected at 25∘C. If the total volume of gas collected i...
Part 1. The air in a bicycle tire is bubbled through water and collected at 25∘C. If the total volume of gas collected is 5.60 L at a temperature of 25∘C and a pressure of 760 torr, how many moles of gas were in the bicycle tire? - Part 2. A 295-mL flask contains pure helium at a pressure of 755 torr . A second flask with a volume of 480 mL contains pure argon at a pressure of 714...
POST-LABORATORY QUESTIONS (Show your calculations). 1. A sample of gas weighs 3.10 g and occupies a...
POST-LABORATORY QUESTIONS (Show your calculations). 1. A sample of gas weighs 3.10 g and occupies a volume of 1.272 ml at 30 °C and 720 mm Hg. What is the molar mass of the gas? 2.3 moles of hydrogen occupy a volume of 67.20 L, at standard temperature and pressure (STP. 0 °C and 760 mmHg). What is the density of hydrogen at STP? 3.2.5 moles of gas, at 1590 mmHg, occupy a volume of 28.00 L. What is the...
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...
Date Data Sheet Section Code Table 10.1. Mass, pressure, temperature, and volume measurements. Unknown Number: 924 Runi Run 2 Run 3 Estimated Error Mass of flask and foil (g) 72.22 72.25 Mass of flask, foil, and condensed vapor (g) 72.39 1241 Temperature of boiling water bath (°C) 100 °C 100°C Volume of Alask (mL) ML 154mL Barometric pressure (mmHg) 754.1754) Room temperature (°C) 22.0021°C Vapor pressure at room temperature (mmHg) 100 °C 100C A student neglected to measure the volume...
The steps just refer to the lab procedure and the ones present
are where data is actually recorded. The rest, like step 5, are
things like fill the flask with water and wipe away any excess. All
needed info for the calculations is there. I'm trying to
double-check my work.
DATA & CALCULATIONS: Measured quantities that were the same for all three runs: 138.5 mL Volume of flask Laboratory temperature Atmospheric pressure Density of air 29.82 inches Hg 1.189 g/L...
Mass of stoppered flask + air + tape (record all digits from balance) ISLcBS 22 C 151.70es 22 Air temperature 151.Blo4 S1.8744 Mass of stoppered flask and CO2 (gas) + tape 23 °C °C Temperature of CO: (gas) torr Barometric pressure 204 49 mL Volume of water in flask (= Vgas) g/mL Density of air (from CRC Handbook) Mass of air in flask Calculating ngas Mass of EMPTY stoppered flask + tape Mass of CO2 in flask K K Temperature...
A student designed his experiment based on Dumas method to determine the molecular 5 Pts mass of an unknown volatile liquid and tabulated the data obtained from his cxpcriment. From the given data calculate the Molar mass of the unknown liquid and percent error if the accepted molar mass is Y g/mol. Q8. Mass of flask, boiling stone, foil cap, & unknown liquid after cooling Mass of flask, boiling stone and foil cape Water bath temperature Barometric pressure Volume of...
i just wanna double check whether i answered correct or not
please.
Why do we measure the volume of the flask in this experiment with water rather than using the volume listed on the side? Select all correct answers that apply. Must include all correct answers for full credit. The volume is not accurate on a flask to the number of significant figures required for this experiment The volumetric markings on the flask do not extend to it's full height...
POST-LABORATORY QUESTIONS (Show your calculations). 1. A sample of gas weighs 3.10 g and occupies a volume of 1.272 ml at 30 °C and 720 mm Hg. What is the molar mass of the gas? 2.3 moles of hydrogen occupy a volume of 67.20 L, at standard temperature and pressure (STP. 0 °C and 760 mmHg). What is the density of hydrogen at STP? 3.2.5 moles of gas, at 1590 mmHg, occupy a volume of 28.00 L. What is the...
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