For each calculation, show your work and put a box around each answer.
1. Volume of flask
2. Mass of dry air in flask
3. Mass of empty flask.
4. Mass of carbon dioxide in flask
5. Experimental molecular weight
6. Percantage error
Data and Observations Mass of foil and flask filled with air125799g 2. Temperature of dry air in flask 21å 3. Barometric pressure s L4mm Hg (torr)0.ogon atm 4. Density of dry air at experimental temperature and pressure998gL ( g/mL 5. Mass of foil and flask filleld with CO2, after first twenty minutes25 940g 6, Mass of foil and flask filled with CO2, after secondfifteen minutesã¼ã¼ã¼ã¼ã¼ã¼ã¼ã¼ã¼ã¼ã¼ã¼g 7, Mass of foil and flask filled with CO2, after additional five min (if needed) g 8. Temperature of CO2 in flask 22. 9. Mass of flask filled with water 404 g(with foil) 10. Temperature of waterC 11. Density of water at above temperature g/mL Calculations and Analysis The volume of the flask is equal to the volume of water in the flask. This volume is calculated from the mass and the density of the water. The mass of the water is the difference between the mass (lask+ foil water) and the mass (empty flask toil However, since the mass of the water is much larger than the mass of air displaced by the water the mass of water can be approximated as the difference between the mass (flask + foil+ water) (#9 on Data Sheet) and the mass (nask + foil +ar) (#1 on Data Sheet). The density of water at different temperatures is tabulated above The mass of dry air in the flask is calculated from the volume of the flask and the density of dry air at the recorded temperature and pressure. The density of dry air at different combinations of temperature and pressure is tabulated above. . The mass of the empty flask is equal to the difference between the mass (flask folil arn) (#1 on Data Sheet) and the calculated mass of dry air. The mass of carbon dioxide in the flask is determined by subtracting the mass of the empty flask from the largest value of mass rask +fo.carbon doode) (the largest value of #6 or #7 on the Data Sheet) .
