# A container has a volume of #18 L# and holds #9 mol# of gas. If the container is compressed such that its new volume is #12 L#, how many moles of gas must be released from the container to maintain a constant temperature and pressure?

Avogadro's law can be used to find the solution:

The initial conditions are denoted by the number 1, and the final conditions are represented by the number 2.

Let's list the variables that we know and don't know.

To find the final number of moles, reorder the equation as follows:

Enter the provided values to determine the total moles:

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6 moles of gas.

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When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

- A container has a volume of #4 L# and holds #2 mol# of gas. If the container is expanded such that its new volume is #7 L#, how many moles of gas must be injected into the container to maintain a constant temperature and pressure?
- A container with a volume of #6 L# contains a gas with a temperature of #100^o K#. If the temperature of the gas changes to #480 ^o K# without any change in pressure, what must the container's new volume be?
- At constant pressure and 25 °C a sample of gas occupies 4.5 liters. At what temperature will the gas occupy 9.0 liters?
- If #5/7 L# of a gas at room temperature exerts a pressure of #9 kPa# on its container, what pressure will the gas exert if the container's volume changes to #5/9 L#?
- How does changing the speed of a fluid affect its pressure?

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