Physics
posted by Pat .
According to Boyle's law, the volume V of a gas at a constant temperature varies inversely with the pressure P. When the volume of a certain gas is 125 cubic meters, the pressure is 20 psi (pounds per square inch).
If the volume of gas is increased to 400 cubic meters, the pressure will be

At constant temperature (which is what they want you to assume),
P*V = constant
125*20 = 400*P2
P2 = final pressure = (125/400)*20
= 6.25 psi
Since the equation
P1/P2 = V2/V1
involves dimensionless ratios, I did NOT have to convert pressure from psi to Pascal units and back again. I chose to keep pressure in psi and volume in cubic meters
Respond to this Question
Similar Questions

MATH PLEASE HELP!
According to Boyle's law, the pressure p of a compressed gas is inversely proportional to the volume, v. If a pressure of 20 pounds per square inch exists when the volume of the gas is 500 cubic inches, what is the pressure when the … 
algebra
when the temperature stays the same, the volume of the gas is inversely proportional to the pressure of the gas. If a balloon is filled with 87 cubic inches of a gas at a pressure of 14 pounds per square inch. Find the new pressure … 
Math Word Problems
#1. The pressure P of a compressed gas is inversely proportional to the volume V. If there is a pressure of 35 pounds per square inch when the volume of gas is 400 cubic inches, find the pressure when the gas is compressed to 100 square … 
Math12th grade
#1. The pressure P of a compressed gas is inversely proportional to the volume V. If there is a pressure of 35 pounds per square inch when the volume of gas is 400 cubic inches, find the pressure when the gas is compressed to 100 square … 
Physics
Boyle's Law says that the volume of a gas varies inversely with the pressure. When the volume of a certain gas is 4L , the pressure is 165kPa (kilopascals). What is the volume when the pressure is 60kPa? 
Algebra
Boyle's Law says that the volume of a gas varies inversely with the pressure. When the volume of a certain gas is 4L, the pressure is 165 kPa(kilopascals). What is the volume when the pressure is 60 kPa? 
Chemistry
Boyle's Law says that the volume of a gas varies inversely with the pressure. When the volume of a certain gas is 2 L, the pressure is 1065 kPa (kilopascals). What is the pressure when the volume is 15 L ? 
Physics
Boyle's Law says that the volume of a gas varies inversely with the pressure. When the volume of a certain gas is 2 L, the pressure is 1065 kPa (kilopascals). What is the pressure when the volume is 15 L? 
Algebra
Boyle's Law says that the volume of a gas varies inversely with the pressure. When the volume of a certain gas is 5 liters, the pressure is 158 kPa (kilopascals). What is the volume when the pressure is 395 kPa? 
algebra
The volume of a gas varies directly with its temperature and inversely with the pressure. If the volume of a certain gas is 20 cubic feet at a temperature of 350K and a pressure of 35 pounds per square inch, what is the volume of the …