We are asked to calculate the final volume of the gas at 87 °C.
Recall that the ideal gas law is:
The temperature and volume of a gas are related to the number of moles, gas constant and pressure. The value nR and P is constant.
A Kongming lantern, or Chinese sky lantern, is a small hot air balloon. At room temperature (25 °C), these have a volume of roughly 6.7 liters. After the fire is lit at the bottom, assume all the gas inside reaches a final temperature of 87 °C, what is the final volume of the balloon?
A. 1.9 L
B. 23 L
C. 8.1 L
D. 5.5 L
E. 150 L
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