The mass of Hydrogen molecule is 3.32×10−24 grams if 1023 hydrogen molecules per second strike 2 cm2 of wall at an angle of 45° with the normal, when moving with a speed of 105 cm/s. The pressure exerted on the wall is nearly

Pressure P=FA=ΔPΔt(A)P=2mVcosθΔtA⋅Nall given values of various physical quantities are converted into MKS system; mass=3.32×10−24×10−3kg;velocity=103m/s;cos45=12;N=1023= avagadro number;time=1 sec;Area=2×10−4meter2P=2×3.32×10−24×10−3×103×cos45×10231×2×10−4P=2350N/m2