Compute all parts of given question:

Question: The actual diameter of an atom is about a tenth of a nanometer (10-10 m). In order to develop some intuition for the molecular scale of a gas, assume that you are considering a liter of air (mostly N2 and O2) at room temperature and a pressure of one atmosphere - 105 Pa. Put all your answers in the answer box, labeling each one by its letter and putting a blank line between each answer.

Part A: Calculate the number of molecules in the sample of gas.

Part B: Estimate the average spacing between the molecules.

Part C: Estimate the average speed of a molecule using the relation between the KE of a molecule and the temperature.

Part D: Suppose that the gas were rescaled upwards so that each atom was the size of a tennis ball. What would be the average spacing between molecules?

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