A 3.00-l flask is filled with gaseous ammonia, nh3. the gas pressure measured at 28.0 ∘c is 1.75 atm. assuming ideal gas behavior, how many grams of ammonia are in the flask?

Question

Chemistry

Barbara Burke

20 July, 10:59

A 3.00-l flask is filled with gaseous ammonia, nh3. the gas pressure measured at 28.0 ∘c is 1.75 atm. assuming ideal gas behavior, how many grams of ammonia are in the flask?

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Tiana Morrison · Answer 1

I have found this variation on the ideal gas equation to be very handy.

PV = nRT ... n = m / M ... where m is mass, M is molar mass

PV = mRT / M

m = PVM / RT

m = 1.75 atm x 3.00L x 28.0g/mol / 0.0821 Latm/molK / 295K

m = 6.07g

The grams of ammonia are in the flash is a total of 6.07 grams