Question 12 (1 point) How can you cause a decomposition reaction of water?
O Heat up the water.
O Add salt to the water.
Apply electricity to the water.
If you wait long enough it will decompose on its own.

Apply electricity to the water.

Explanation:

Water can be made to decompose by addition of electricity to it. Electric currents makes water undergo a decomposition reaction into subsequent compounds.

 The reaction equation is given as shown below:

                   2H₂O →  2H₂  +  O₂

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.