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Q. On a cool morning, when the temperature is 16.0 deg Celsius, you measure the pressure in your car tires to be 20.0 psi. After driving 40.0 mi on the freeway, the temperature of your tires is 56.0 deg Celsius. What pressure will your tire gauge now show?

Q.The pressure in a helium gas cylinder is initially 25 atmospheres. After many balloons have been blown up, the pressure has decreased to 5 atm. What fraction of the original gas remains in the cylinder?

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