Question

a 11.0 L sample of hydrogen gas has a pressure of 25.0atm. What volume would this gas occupy at 2.30 atm?

Answer 1

PV=nRT

When P=25, V=11:
11*25=nRT
nRT=275

When P=2.3,
2.3V=nRT
2.3V=275
V=275/2.3=119.57L

Answer 2

I was never taught the presentation, so follow the presentation of your book
(I learnt it all by myself and my dad, so there were no books)

Answer 3

yea i figured it out already, thanks a lot tho =]

Answer 4

no problem :)
(PostScript: Hey, can you teach me the presentation plz? orz)