Assume that you take a flask, evacuate it to remove all the air, and find its ma
ID: 780279 • Letter: A
Question
Assume that you take a flask, evacuate it to remove all the air, and find its mass to be 461.5 g . You then fill the flask with argon to a pressure of 2.00 atm and reweigh it. What would the balance read (in grams) if the flask has a volume of 8.75 L and the temperature is 23.0 c? Assume that you take a flask, evacuate it to remove all the air, and find its mass to be 461.5 g . You then fill the flask with argon to a pressure of 2.00 atm and reweigh it. What would the balance read (in grams) if the flask has a volume of 8.75 L and the temperature is 23.0 c?Explanation / Answer
P*V= n*R*T
=> 2*8.75 = n*.082*296.15
=> n=.7206 mol
mass = mols *molar mass= .7206*40=28.825 g
=> total mass =490.325 g