The ideal gas equation:
We're told that the pressure in a container cannot be lowered below 10-15 atm.
V = 1 cm3 = 0.001 liter
The ideal gas constant, R = 0.0821.
Even the best vacuum pumps cannot lower the pressure in a container below 10−15atm.
How many molecules of air are left in each cubic centimeter in this "vacuum?" Assume that the temperature is 283 K.
Answer: ________ molecules/cm3
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