Using the periodic table, predict whether the following chlorides are ionic or convalent: kci, nci3,ici, mgci2,pci5,cci4

Ionic, covalent, covalent, ionic, covalent, covalent

Explanation:

In order to solve this problem, let's introduce the basic strategy:

Since all compounds here are chloride, we only need to take a look at the other element which makes the substance.

To summarize, metals (groups 1A, 2A, all elements of group B) would produce ionic compounds, while not having them in your structures would imply that you have a covalent compound.

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.