We are asked what assumptions should we make to arrive at the answer.
You may want to reference (Pages 404 - 407) Section 10.4 while completing this problem.
A large flask is evacuated and weighed, filled with argon gas, and then reweighed. When reweighed, the flask is found to have gained 3.222 g. It is again evacuated and then filled with a gas of unknown molar mass. When reweighed, the flask is found to have gained 8.106 g.
(a) Based on the molar mass of argon, estimate the molar mass of the unknown gas.
(b) What assumptions did you make in arriving at your answer?
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