A helium-containing balloon has a volume of 10.6 L and a pressure of 1.22 atm at...
A helium-containing balloon has a volume of 10.6 L and a pressure of 1.22 atm at a temperature of 27.9C. What will the pressure inside the balloon be if the temperature is lowered to -11.3C? Assume that the gas behaves ideally. Express your answer in units of atmospheres (atm) using at least three significant figures.
Homework Answers
SOLUTION :
As per Gas Law,
PV/T = R (gas constant)
If V remains unchanged, then,
P/T = constant
So,
P1 / T1 = P2 / T2
=> P2 = P1 * (T2 / T1)
=> P2 = 1.22 ((273 - 11.3) / (273 + 27.9))
=> P2 = 1.061 atm
So, pressure in balloon at decreased temperature of -11.3ºC will be 1.061 atm (ANSWER).
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