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(a) What is the gauge pressure (in atm) in a 25.0°C car tire containing 3.56 mol...

(a) What is the gauge pressure (in atm) in a 25.0°C car tire containing 3.56 mol of gas in a 28.0 L volume? (Enter your answer to at least 2 decimal places.) _____ atm

(b) What will its gauge pressure be (in atm) if you add 1.40 L of gas originally at atmospheric pressure and 25.0°C ? Assume the temperature returns to 25.0°C and the volume remains constant. (Enter your answer to at least 2 decimal places.) _____ atm

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