题目
题目

Chemistry - Winchel: 24-25_YR U8: Combined Gas Laws

多重下拉选择题

What will happen if the following changes are made?  a) If a balloon is cooled, what happens to the pressure of the air inside the balloon? [ Select ] Increases Decreases b) What happens to the pressure of the air in a car tire on a very hot day? [ Select ] Increases Decreases c) What happens to the volume of a hot air balloon when the heater is turned on?  [ Select ] Increases Decreases d) What will happen to the pressure inside a can of hair spray if it is thrown into the fire?  [ Select ] Increases Decreases e) What happens to the volume of a weather balloon if the pressure and temperature both decreases? [ Select ] Increases It depends on how much the pressure and temperature change Decreases

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思路分析
This item presents five separate situations (a–e) and asks you to choose the outcome from a pair of options in each case. We’ll evaluate each part individually and explain why the selected option fits the underlying gas-law behavior. a) If a balloon is cooled, what happens to the pressure of the air inside the balloon? [Increases / Decreases] - The relevant concept is that, at a fixed volume, gas pressure is proportional to temperature (Gay-Lussac’s law). Cooling lowers the temperature, so the pressure drops. This makes Decreases the correct choice. If you picked Increases, that would contradict the direct P–T relationshi......Login to view full explanation

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