How many moles of air escaped in container?-Need Help

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In summary, the problem involves finding the number of moles of air that escaped from a 1L container after being sealed in a bath of boiling water and then opened at thermal equilibrium. This is a PV = RT question and the important time is immediately after the container is opened. The amount of air that escaped can be determined by comparing the amount that can be held at the temperature of boiling water to the amount that was actually inside the container.
  • #1
curiousM
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Homework Statement


The are temperature and pressure in a laboratory are 20 degree C and 1 atm. A 1L container is open to the air. The container is then sealed and placed in a bath of boiling water. After reaching thermal equilibrium, the container is opened. How many moles of air escaped?


Homework Equations






The Attempt at a Solution



No solution attemp has been made since I don't know how to start this problem
 
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  • #2
Welcome to PF!

curiousM said:
The are temperature and pressure in a laboratory are 20 degree C and 1 atm.

A 1L container is open to the air. The container is then sealed and
placed in a bath of boiling water.

After reaching thermal equilibrium, the container is opened. How many moles of air escaped?

Hi curiousM! Welcome to PF! :smile:

This is PV = RT question.

Just ask yourself … which of P V and T are given, for the important time?

The important time in this case is immediately after the container is opened. How much air at the temperature of boiling water can the container hold?

And how much was actually inside?

So how much must escape? :smile:
 
  • #3
Thanks fot the help.
 

1. How do you calculate the number of moles of air that escaped from a container?

The number of moles of air that escaped from a container can be calculated by using the ideal gas law equation: n = PV/RT, where n is the number of moles, P is the pressure, V is the volume, R is the gas constant, and T is the temperature. Simply plug in the known values and solve for n.

2. What are the units for measuring moles of air?

Moles are measured in units of moles (mol), which is a unit of measurement for the amount of a substance. It is defined as the number of atoms in 12 grams of carbon-12.

3. Can the number of moles of air escaping from a container be negative?

No, the number of moles of air escaping from a container cannot be negative. Moles are a measure of the amount of a substance, and by definition, it cannot be a negative amount.

4. How does temperature affect the number of moles of air escaping from a container?

The temperature of the air in the container affects the number of moles of air that will escape. As the temperature increases, the molecules in the air gain more kinetic energy and become more active, increasing the pressure and volume of the air. This can lead to more moles of air escaping from the container.

5. What factors can affect the accuracy of calculating the number of moles of air that escaped from a container?

The accuracy of calculating the number of moles of air that escaped from a container can be affected by various factors such as the accuracy of the measurements for pressure, temperature, and volume, as well as the assumption that the gas is behaving ideally. Other factors such as leaks or changes in external conditions can also impact the accuracy of the calculated value.

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