1. The temperature of a quantity of gas is initially at 0 0 C. If the temperatur

Question

1.     The temperature of a quantity of gas is initially at 0 0C. If the temperature is increased to 100 0C, by what factor must the pressure increase to keep the volume constant? (5 pts.)

2.     The pressure in each of your car tires is 2.5 X 105 N/m2 (Pa). The mass of your car is 2500 kg. Assuming that each of the tires bears one-quarter of the total load, what is the contact area of each tire with the road? ( 5 points)

3.    A volume of 180 cm3 of an ideal gas has an initial temperature of 25 0C and an initial pressure of 1.5 atm. What is the final pressure if the volume is reduced to 140 cm3 and the temperature is raised to 50 0C? (5 points)

Explanation / Answer

1) pressure should increase by a factor of 373/273

2)A=625*9.81/(2.5*10^5)=0.0245 m^2

3)P2=(1.5*180*323)/(140*298)=2.09 atm

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