***Please Answer #3 only*** A tragedy occurred at Lake Nyos in Cameroon (Africa)
ID: 921995 • Letter: #
Question
***Please Answer #3 only*** A tragedy occurred at Lake Nyos in Cameroon (Africa) during the summer of 1986 . During the process of unraveling this mystery scientists had to rely on basic concepts of gas behavior which they most likely learned in a general chemistry class. Moreover, the PV=nRT equation was an especially important tool used by the scientists to help determine what happened in this tragedy.
2. Calculate the density of dry air using the result from above and the d = PM/RT equation. Assume the overnight conditions during this tragedy were as follows: pressure , 1 atm and the temp., 18 degree C.
3. Calculate the density of carbon dioxide gas using the d = PM/RT equation. Assume the same conditions as specified in #2 above.
Explanation / Answer
Density of a gas, d= PM/RT, where P = Pressure, M = molecular weight, R = the gas constant and T = the temparature in Kelvin unit
d=PM/RT, P = 1 atm, T = 18 degC = 291 K, R = 0.082 L-atm/m/K = 82 mL-atm/m/K
Molar Mass of CO2, M = 44 g/mol
So, density of CO2 gas at the given condition;
d = 1*44/82/291 g/cc = 0.00184 g/cc
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