What you’ll learn4 learning objectivesChoose one objective for a focused lesson, or study the complete topic.15.3.1The basic assumptions of the kinetic theory of gases• state the basic assumptions of the kinetic theory of gasesSyllabus objective15.3.2How molecular movement causes the pressure exerted by a gas and derive and• explain how molecular movement causes the pressure exerted by a gas and derive and use the relationship pV = 1/3 Nm<c2>• Where <c2> is the mean-square speed (a simple model considering one-dimensional collisions and then extending to three dimensions using 1/3 <c2> = <cx 2> is sufficient)Syllabus objective15.3.3The root-mean-square speed cr.m.s. is given by c<>2• understand that the root-mean-square speed cr.m.s. is given by c<>2Syllabus objective15.3.4PV = 1/3 Nm<c2> with pV = NkT to deduce that the average translational• compare pV = 1/3 Nm<c2> with pV = NkT to deduce that the average translational kinetic energy of a molecule is 3/2 kT, and recall and use this expressionSyllabus objective