An ideal gas in tank - (minus) 30 F initial temperature is allowed to expand quickly into a larger empty tank. If the volume of the gas in increased from 5000 cm^3 to 25 liters and the pressure is reduced from 8 atm to 2.02 * 10^5 Pa, what is the new temperature of the gas?

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In addition to what Smoothy said:

a) this is not an astronomy question, and
b) please do not double-post questions. See:
https://www.askmehelpdesk.com/physic...lp-574245.html