In 1 cm3 at a pressure of 0.1 MPa there are 2.7⋅1019 nitrogen molecules. The number of molecules whose vertical velocity component lies in the range from 999 to 1001 m/s is 1.3⋅1012.
a. What is the number of such molecules contained in 1 liter of nitrogen?
b. How many nitrogen molecules with a vertical velocity component in the intervals of 1000±0.1 and 1000±10 m / s are contained in 1 m3 ? Assume that the number of molecules with a velocity that lies in a certain velocity interval is proportional to this interval.