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Helium gas with a volume of 3.50 L , under a pressure of 0.190 atm and...

Helium gas with a volume of 3.50 L , under a pressure of 0.190 atm and at a temperature of 45.0 ∘C, is warmed until both pressure and volume are doubled.What is the final temperature?How many grams of helium are there? The molar mass of helium is 4.00 g/mol.

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