1. An unknown gas inside a 7.57L container has a pressure of 29.5psi at 298K. How many moles of gas are present?

PLEASE HELP!!

it's 3.2 on edge, i just took the test.

sup bro, im dumb, but this is what i found xd

"the ozone layer acts as a filter for the shorter wavelength and highly hazardous ultraviolet radiation (uvr) from the sun, protecting life on earth from its potentially harmful effects. when the sky is clear, there is an inverse relationship between stratospheric ozone and solar uvr measured at the earth's surface"