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1.) A balloon is inflated with air from an initial volume of 0.149 L to 2.151...

1.) A balloon is inflated with air from an initial volume of 0.149 L to 2.151 L against an external pressure of 1.027 atm. If the inflation occurred under adiabatic conditions, then what is the change in internal energy in J of the air in the surroundings?

2.)A fuel mixture in a piston chamber expands from 246 mL to 1507 mL at constant temperature against a vacuum. How much work is done (joules)?  

PLEASE WORK OUT IM COMPLETELY LOST!

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