Use the phrase INCREASES (1)/ DECREASES (D)/ STAYS THE SAME (S) to complete each

Question

Use the phrase INCREASES (1)/ DECREASES (D)/ STAYS THE SAME (S) to complete each sentence 1. Situation assuming the temperature of the gas remains constant) assuming the temperature of the gas remains constant) I, D, S As a tightly sealed flexible balloon rises into the atmosphere, the mass of the gas in the balloon As a tightly sealed flexible balloon rises into the atmosphere, the pressure outside of the balloon As a tightly sealed flexible balloon rises into the atmosphere, the density of the gas in the balloon As a tightly sealed flexible balloon rises into the atmosphere, the volume of the balloon (assuming the temperature of the gas remains constant) (assuming the temperature of the gas remains constant) When more gas molecules are added to a rigid container, the pressure inside the container (Temperature held constant) When the speed of a collection of gas molecules decreases, (in a closed, rigid container) the temperature of the gas In order to increase the temperature of a closed rigid container of gas, one could the pressure on the gas

Explanation / Answer

1)Since there is no leakage, the mass remains the same as mass can neither be created nor destroyed

2)Since air is thinner at higher altitudes, the pressure outside of the balloon decreases.

3)Since pressure decreases and temperature remains the same, by ideal gas law, the volume of the gas increases. As the volume increases and the mass remains the same, the density decreases.

4)Since pressure decreases and temperature remains the same, by ideal gas law, the volume of the gas increases.

5)Since the mass increases, the number of moles increases and also since the volume remains the same, by ideal gas law (PV=nRT), the pressure inside the container increases.

6)The speed of the molecules increases with increase in temperature since Kinetic energy increases with increase in temperatures.

hence when speed decreases, the temp. decreases.

7)by the ideal gas law, increasing the temperature on the gas, increases the pressure on the gas.

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