## Chemistry: A Molecular Approach (3rd Edition)

$438$ $mm$ $Hg$
Write down the known and unknown quantities. Use Boyle's Law to find the unknown final pressure. $P_{1}= 735 mm Hg$ $V_{1}= 5.6 L$ $V_{2}= 9.4 L$ $P_{2}= ?$ $P_{2}$$=$$\frac{P_{1}V_{1}}{V_{2}}$ $=$ $(735 mm Hg\times5.6L)\div9.4 L$ $=$ $438$$mm$$Hg$