REPORT The Molar Mass of a Gas NAME SECTION 12 DATA AND CALCULATIONS Data: Unknown no. (a) Mass of flask, stopper, and plug, filled with air (b) Mass of flask, stopper, and plug, filled with unknown gas (or CO₂) (c) Mass of flask, stopper, and plug, filled with water (d) Temperature of flask (e) Barometric pressure (f) Density of dry (or moist) air at the flask temperature and pressure Reference: (g) Temperature, absolute (h) Pressure (i) Volume of flask Calculations (i) Mass of air in flask at the start (k) Mass of empty flask, stopper, and plug (1) Mass of unknown gas (or CO,) .085 R=0.08206 L atm mol (m) Molar mass of gas (CO) Calculate from Equation (3), assuming (n) True molar mass of gas (CO) K-1 Reference: (o) Percentage of relative error LOCKER INSTRUCTOR DATE 97.735515 61, 8677 47.1325205 101.960 Trial 1 101.86909 101.9540° Trial 2 97.8274 97.73259 97.82449 248.66 243.96 22.1 758. 25 g 8- °C 22.1 C torr 758.25 for 602 17. g/mL g/mL Trial 1 Trial 2 295.25 K K atm atm L 9 9 9 9 9 g/mol g/mol g/mol 96 g/mol Why can we neglect the mass of air in the flask when obtaining the mass of the water (from which we calculate the volume of the flask) but not when calculating the mass of the carbon dioxide? Explain. If you are unable to answer this question, discuss it with your instructor before leaving the laboratory Convert 758.25 corr Cent. 758.25mmy - 75.825 cmilly 153
REPORT The Molar Mass of a Gas NAME SECTION 12 DATA AND CALCULATIONS Data: Unknown no. (a) Mass of flask, stopper, and plug, filled with air (b) Mass of flask, stopper, and plug, filled with unknown gas (or CO₂) (c) Mass of flask, stopper, and plug, filled with water (d) Temperature of flask (e) Barometric pressure (f) Density of dry (or moist) air at the flask temperature and pressure Reference: (g) Temperature, absolute (h) Pressure (i) Volume of flask Calculations (i) Mass of air in flask at the start (k) Mass of empty flask, stopper, and plug (1) Mass of unknown gas (or CO,) .085 R=0.08206 L atm mol (m) Molar mass of gas (CO) Calculate from Equation (3), assuming (n) True molar mass of gas (CO) K-1 Reference: (o) Percentage of relative error LOCKER INSTRUCTOR DATE 97.735515 61, 8677 47.1325205 101.960 Trial 1 101.86909 101.9540° Trial 2 97.8274 97.73259 97.82449 248.66 243.96 22.1 758. 25 g 8- °C 22.1 C torr 758.25 for 602 17. g/mL g/mL Trial 1 Trial 2 295.25 K K atm atm L 9 9 9 9 9 g/mol g/mol g/mol 96 g/mol Why can we neglect the mass of air in the flask when obtaining the mass of the water (from which we calculate the volume of the flask) but not when calculating the mass of the carbon dioxide? Explain. If you are unable to answer this question, discuss it with your instructor before leaving the laboratory Convert 758.25 corr Cent. 758.25mmy - 75.825 cmilly 153
Chapter5: Gases
Section: Chapter Questions
Problem 32Q
Related questions
Question
I have my data from my experiment how do I find f) ? ... For g) do I convert to K?... How do I find the pressure? So lost
Transcribed Image Text:REPORT
The Molar Mass of a Gas
NAME
SECTION
12
DATA AND CALCULATIONS
Data: Unknown no.
(a) Mass of flask, stopper, and plug, filled with air
(b) Mass of flask, stopper, and plug, filled with unknown gas (or CO₂)
(c) Mass of flask, stopper, and plug, filled with water
(d) Temperature of flask
(e) Barometric pressure
(f) Density of dry (or moist) air at the flask temperature and pressure
Reference:
(g) Temperature, absolute
(h) Pressure
(i) Volume of flask
Calculations
(i) Mass of air in flask at the start
(k) Mass of empty flask, stopper, and plug
(1) Mass of unknown gas (or CO,)
.085
R=0.08206 L atm mol
(m) Molar mass of gas (CO) Calculate from Equation (3), assuming
(n) True molar mass of gas (CO)
K-1
Reference:
(o) Percentage of relative error
LOCKER
INSTRUCTOR
DATE
97.735515
61, 8677 47.1325205
101.960
Trial 1
101.86909
101.9540°
Trial 2
97.8274
97.73259
97.82449
248.66
243.96
22.1
758. 25
g
8-
°C
22.1
C
torr
758.25 for
602
17.
g/mL
g/mL
Trial 1
Trial 2
295.25
K
K
atm
atm
L
9
9
9
9
9
g/mol
g/mol
g/mol
96
g/mol
Why can we neglect the mass of air in the flask when obtaining the mass of the water (from which we calculate the volume of the flask) but not when calculating
the mass of the carbon dioxide? Explain. If you are unable to answer this question, discuss it with your instructor before leaving the laboratory
Convert 758.25 corr
Cent.
758.25mmy - 75.825 cmilly
153
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