Question

Part A) A 3.00-L flask is filled with gaseous ammonia, NH3. The gas pressure measured at 22.0 ∘C is 2.55 atm . Assuming ideal gas behavior, how many grams of ammonia are in the flask? Express your answer to three significant figures and include the appropriate units.

Part B)

If 1.00 mol of argon is placed in a 0.500-L container at 26.0 ∘C , what is the difference between the ideal pressure (as predicted by the ideal gas law) and the real pressure (as predicted by the van der Waals equation)? For argon, a=1.345(L2⋠atm)/mol2 and b=0.03219L/mol. Express your answer to two significant figures and include the appropriate units