Barium fluoride (BaF2) has a Ksp = 2.5 × 10–5 (mol/L)3. i. Write the dissolution reaction of BaF2, including all states. (0.5 points)

ii. Write the expression for Ksp for BaF2. (0.5 points)

iii. Write the Ksp expression as an algebraic equation, using the variable x to represent concentrations. (1 point)

iv. Find the solubility of BaF2 by solving the equation you wrote in part iii. (0.5 points)

the answer is symmetrical : )

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.

it's 3.2 on edge, i just took the test.