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**Gay-Lussacsβ Law Problem π·π/π»π = π·π/π»π**

The pressure in an automobile tire is 1.88 atm at 25.0Β°C. What will be the pressure if the temperature warms up to 37.0Β°C?

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Combined Gas Laws π 1 π 1 π 1 = π 2 π 2 π 2

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**Combined Gas Law To derive the Combined Gas Law, do the following:**

Step 1: Write Boyle's Law: P1V1 = P2V2 Step 2: Multiply by Charles Law: P1V12 / T1 = P2V22 / T2 Step 3: Multiply by Gay-Lussac's Law: P12V12 / T12 = P22V22 / T22 Step 4: Take the square root to get the combined gas law: P1V1 / T1 = P2V2 / T2

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**Combined Gas Law Problems**

A toy balloon has an internal pressure of 1.05 atm and a volume of 5.0 L. If the temperature where the balloon is released is 200 C, what will happen to the volume when the balloon rises to an altitude where the pressure is 0.65 atm and the temperature is β150 C?

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π 1 π 1 π 1 = π 2 π 2 π 2 (1.05ππ‘π)(5.0πΏ) (273+20πΆ) = (0.65ππ‘π)( π 2 ) (273 β15πΆ) V=7.11 L

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**Combined Gas Law Problems**

If I initially have 4.0 L of a gas at a pressure of 1.1 atm, what will the volume be if I increase the pressure to 3.4 atm?

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**Combined Gas Law Problems**

A small research submarine with a volume of 1.2 x 105 L has an internal pressure of 1.0 atm and an internal temperature of 150 C. If the submarine descends to a depth where the pressure is 150 atm and the temperature is 30 C, what will the volume of the gas inside be if the hull of the submarine breaks?

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**Combined Gas Law Problems**

People who are angry sometimes say that they feel as if theyβll explode. If a calm person with a lung capacity of 3.5 liters and a body temperature of 360 C gets angry, what will the volume of the personβs lungs be if their temperature rises to 390 C. Based on this, do you think itβs likely they will explode?

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