SOLUTION: Boyle's law applied to the amount of gas used in a given experiment at a constant temp., states the pV=240 where p is pressure measured in kilopascals and V is volume measured in c

Question 121890This question is from textbook
: Boyle's law applied to the amount of gas used in a given experiment at a constant temp., states the pV=240 where p is pressure measured in kilopascals and V is volume measured in cubic centimeters. If a decrease in pressure of 1 kPa produces an increase in volume of 20cm^3, what was the original pressure on the gas?
i have:
pV=240
240-1=20
i dont think that is right...i dont get how to set up the problem though
This question is from textbook

Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
pV=240 __ V=240/p

pV=(p-1)(V+20) __ pV=pV+20p-V-20 __ 0=20p-V-20

substituting for V __ 0=20p-(240/p)-20

multiplying by p __ 0=20p^2-20p-240 __ dividing by 20 __ 0=p^2-p-12

factoring __ 0=(p-4)(p+3)
RELATED QUESTIONS
In physics, the Ideal Gas Law describes the relationship among the pressure, volume, and... (answered by Alan3354)

A gas law in chemistry says that (PV)/(T)=(pv)/t. if T=240, t=320, V=12, P=50, and v=5,... (answered by Alan3354)

Boyle's law states that for a confined gas at a constant temperature, the product of the... (answered by stanbon)

Please help me with this related rates question Boyle's Law states that when a sample of (answered by BlGDAVE)

please help me with this related rate problem. Boyle's Law states that when a sample (answered by Boreal)

Boyle's Law states that when a gas is compressed at constant temperature, the product of... (answered by ikleyn)

Inverse Variation: Boyle's law states that for constant temperature, the pressure (P)... (answered by josgarithmetic)

Boyles Law states that at a constant temperature the pressure of a gas varies inversely... (answered by ikleyn)

In physics, Boyle's law for expansion of air at a constant temperature is given by the... (answered by solver91311)