What volume does 0.465 mol of gas occupy at STP? (Answer in 4 digits)

0.465 g sample of an unknown compound occupies 245 mL at 298K and 1.22 atm. I don't know how to put it in 4 digits tho.

why is arctic sea ice important? arctic sea ice keeps the polar regions cool and moderate global climate. sea ice has a bright surface; 80 percent of the sunlight that strikes it is reflected back into space. as sea ice melts in the summer, it exposes the dark ocean surface.