A certain gas is present in a 10.0 L cylinder at 4.0 atm pressure. If the pressu

Question

A certain gas is present in a 10.0 L cylinder at 4.0 atm pressure. If the pressure is increased to 8.0 atm the volume of the gas decreases to 5.0 L . Find the two constants k_i, the initial value of k, and k_f, the final value of k, to verify whether the gas obeys Boyle's law. Express your answers to two significant figures separated by a comma. If a certain gas occupies a volume of 17 L when the applied pressure is 8.5 atm , find the pressure when the gas occupies a volume of 4.3 L. Express your answer to two significant figures and include the appropriate units.

Explanation / Answer

a)Boyles law states that PV= constant

for case 1 PV= 10*4= 40L.atm for the second case PV=8*5= 40 L.atm (Boyles law is obeyed since K1=K2=40L.atm)

b) from P1V1= P2V2 ( Boyles law)

17*8.5= 4.3*P2

P2= 17*8.5/4.3 =33.6 atm

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