QuestionMay 3, 2025

Check all of the following changes that would increase the pressure inside a tank of helium gas. Heat the tank up by placing it in an oven. Use some of the helium to fill some balloons. Cool the tank down by placing it in a freezer. Add more helium atoms to the tank.

Check all of the following changes that would increase the pressure inside a tank of helium gas. Heat the tank up by placing it in an oven. Use some of the helium to fill some balloons. Cool the tank down by placing it in a freezer. Add more helium atoms to the tank.
Check all of the following changes that would increase the pressure inside a tank of helium gas. Heat the tank up by placing it in an oven. Use some of the helium to fill some balloons. Cool the tank down by placing it in a freezer. Add more helium atoms to the tank.

Solution
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Answer

Heating the tank up by placing it in an oven. ✅ ### Adding more helium atoms to the tank. ✅ Explanation 1. Analyze the relationship between pressure, temperature, and number of particles According to the ideal gas law PV = nRT, pressure (P) is directly proportional to the number of moles of gas (n) and temperature (T), assuming volume (V) is constant. 2. Evaluate each change - **Heating the tank** increases T, which increases P. ✅ - **Using helium to fill balloons** decreases n, which decreases P. ❌ - **Cooling the tank** decreases T, which decreases P. ❌ - **Adding more helium atoms** increases n, which increases P. ✅

Explanation

1. Analyze the relationship between pressure, temperature, and number of particles<br /> According to the ideal gas law $PV = nRT$, pressure ($P$) is directly proportional to the number of moles of gas ($n$) and temperature ($T$), assuming volume ($V$) is constant.<br /><br />2. Evaluate each change<br /> - **Heating the tank** increases $T$, which increases $P$. ✅<br /> - **Using helium to fill balloons** decreases $n$, which decreases $P$. ❌<br /> - **Cooling the tank** decreases $T$, which decreases $P$. ❌<br /> - **Adding more helium atoms** increases $n$, which increases $P$. ✅
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