Carbon dioxide gas is collected at 3.0°C in an evacuated flask with a measured volume of...
Carbon dioxide gas is collected at 3.0°C in an evacuated flask with a measured volume of 5.0L. When all the gas has been collected, the pressure in the flask is measured to be 0.090atm . Calculate the mass and number of moles of carbon dioxide gas that were collected. Be sure your answer has the correct number of significant digits.
Homework Answers
vapor pressure of water at 30C = 0.0075atm
atmospheric pressure = 0.09atm
The partial pressure of CO2 = 0.09-0.0075 = 0.0825atm
T = 3+ 273 = 276K
V = 5L
P = 0.0825atm
R = 0.0821L-atm/mole-K
PV = nRT
n = PV/RT
= 0.0825atm*5L/(0.0821L-atm/mole-K*276K)
= 0.018moles of CO2 >>>>.answer
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