Use the activity series to determine whether each reaction will occur. If it does occur, predict the products and balance. If it does not occur, write “No Rxn” and explain your reasoning. a. Al + H2SO4

b. Ag + ZnCl2

c. Cl2 + NaI

d. K + H2O

e. Au(3+) + KNO3

f. Ba + CoCl3

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.