26. The reaction 2 Al + 3 Br2 — 2 AlBrz
is an example of
(a) combination (c) decomposition
(b) single displacement (d) double displacement

elements

explanation:

yes the other ones are right just show me a pic of ur face cuz u look hot

well in order to answer this question you have to provide more information < 3

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.