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2. A tank of hydrogen contains 47.20 mL at 25 ºC. When the temperature of the balloon is increased to 58 ºC, what will be the new volume of the balloon?

3. Two liters of a gas are collected at 30 ºC and 645 mmHg. When the temperature decreased by 18 ºC, what is the new pressure?

1 answer

PV=kT
assuming constant pressure, V/T = kP which is constant
#2 you want V such that V/(58+273) = 47.20/(25+273)

#3. same idea, but P/T is constant if volume remains constant