800cm3 of gas is collected at 650 mm pressure. At what pressure would the volume of the gas reduce by 40% of its original volume, temperature remaining constant?
From Boyle's law:
= 650 mm Hg
= 800 cm³
= (800*40)/100 = 320 cm³
= x
So the x =
P2 =1625 mm Hg
At 1625 mm Hg pressure of the volume of gas collected be reduced to 40% of its original volume.