haha this question is evil, its 25 degrees celcius, thats wrong...its supposed to be 0 degrees celcius or 273 degrees kelvin...
STP = standard temperature and pressure, which is 1 atm, 273K/0C, and then you can say that its 22.4L
Other than that you cant say its 22.4L because the temperature is actually 298K which would increase the volume to a lil over 22.4L at 1 atm