Q1)If 4 litres of methane gas is at a pressure of 1.0 atm, what will be the pres
ID: 2019840 • Letter: Q
Question
Q1)If 4 litres of methane gas is at a pressure of 1.0 atm, what will be the
pressure of the gas if it is compressed down so that it has a volume of 2.5
litres?
b) If we have 2 litres of methane gas at a temperature of 40 degrees Celsius,
what will the volume of the gas be if we heat the gas to 80 degrees
Celsius?
c) A bubble of air escapes from a diver’s breathing apparatus at a depth of
45m. The bubble has a volume of 2.5 ? 10-5 m3. The water pressure at this
depth is 450 kPa and the temperature is 4oC. What is the volume of the
bubble when it rises to the surface where the temperature is 12 oC? Take
atmospheric pressure to be 100 kPa (The pascal is a unit of pressure i.e. a
measure of force per unit area and is equivalent to one newton per square
meter).
Explanation / Answer
HELLOO!! a )If 4 litres of methane gas is at a pressure of 1.0 atm, what will be the pressure of the gas if it is compressed down so that it has a volume of 2.5 litres? P1 = 1.0 atm V1 = 4L P2 = TBD V2 = 2.5L ==> You use Boyle's law: P1V1 = P2V2 ===> P2 = (P1V1)/V2 = (1.0*4)/2.5 = 1.6 atm Sorry I don't know how to do the rest :( I hope this help anyways ^^ Have a wonderful day!! :)
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