Calculate the number of moles in i) 27g of Al ii) 1.51 x 102 molecules of NHAC Give the salient features of "Modern atomic theory" Derive the relationship between Relative molecular mass and Vapour density.

Nitrogen (n2) undergoes an internally reversible process from 6 bar, 247°c during which pν1.2 = constant. the initial volume is 0.1 m3 and the work for the process is 121.14 kj. assuming ideal gas behavior, and neglecting kinetic and potential energy effects, determine heat transfer, in kj, and the entropy change, in kj/s. show the process on a t-s diagram.