Question

the gaseous product of a reaction is collected in a 25.0-L container at 27degree celcious. the pressure in the container is 300 kPa and the gas has a mass of 96.0g. what is the molar mass

Answer 1

Use PV = nRT and solve for n = number of moles. Then n = grams/molar mass and solve for molar mass.
For PV = nRT, don't forget T must be in kelvin (note the correct spelling of celsius) and R must be 8.314 if you use kPa for P or R = 0.08206 if P is in atmospheres. To convert to atmospheres 300 kPa/101.325.

Answer 2

22.3