A balloon filled with helium has a volume of 1.00 × 10³ L at 20°C.What would be the balloon's volume at 30°C,if the pressure surrounding the balloon remains constant?

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Quizplus · Accepted Answer

The volume of the gas at a new temperature can be found using Charles's Law, which states that $V_1/T_1 = V_2/T_2$ when pressure is constant. Both temperatures must be in Kelvin: $T_1 = 20°C + 273.15 = 293.15 K$ and $T_2 = 30°C + 273.15 = 303.15 K$. Solving for $V_2$, $V_2 = V_1 \times (T_2/T_1) = 1.00 \times 10^{13} \times (303.15/293.15) \approx 1.03 \times 10^{13} L$.

A Balloon Filled with Helium Has a Volume of 1