Question:
Use $\mathrm{R}=8.3 \mathrm{~J} / \mathrm{mol}-\mathrm{K}$ wherever required.
Hydrogen gas is contained in a closed vessel at $1 \mathrm{~atm}(100 \mathrm{kPa})$ and $300 \mathrm{~K}$.
(a) Calculate the mean speed of the molecules.
(b) Suppose the molecules strike the wall with this speed making an average angle of $45^{\circ}$
with it. How many molecules strike each square meter of the wall per second?
Solution:
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