The following reaction is exothermic: 3NO(g) N2O(g) NO2(g) Predict and explain the effect of each of the following stresses on the position of equilibrium. (a) N2O(g) is added to the equilibrium mixture without change of volume or temperature. (b) The volume of the equilibrium mixture is reduced at constant temperature. (c) The temperature of the equilibrium mixture is decreased. (d) Gaseous argon (which does not react) is added to the equilibrium mixture while keeping both the total gas pressure and the temperature constant. (e) Gaseous argon is added to the equilibrium mixture without changing the volume.

the mantle

explanation:

earth is divided into three layers: the crust or the outermost layer on which we live; the underlying, middle layer - the mantle - and the core (the innermost layer of earth).

answer: semi-infinite solid initially at a uniform temperature of 400 ◦c is cooled at its surface by convection. the cooling fluid at a constant temperature of 200 ◦c has a convective coefficient (ha) of 250 w/m2.k. the physical properties of the solid: k = 20 w/m.k and α = 4 * 10-5  m2/s. using δx = 0.04 m and δt = 10 s. write the finite difference equations describing the transient heat transfer of the first five δx and the temperature profile after 30 s.