4Fe(s)+302(g) – 2Fe2O3(s) Calculate how many grams of iron (iii) oxide, Fe,0, are
produced if 55 grams of iron are reacted.

more info ? ? i don't understand what the question is

explanation:

i would say b

explanation:

but i think i would need more information than that

diaria maybe go see a doctor about that

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.