Ashley wants to compare the solubility of three materials: salt, sand, and flour. She fills three beakers with 500 mL of water each. She then adds the same amount of each solute to the
beaker. The picture below shows the particles left after mixing.
Based on Ashley's observations, what statement can she make about the solubility of the three
materials?

b.

the accuracy of the data.

the answer your looking for is c).

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.