An atom has the electron arrangement 2,8. What will it do to gain a full
outer shell?
A) bond with itself
B) gain 8 electrons
C) lose 8 electrons.
D) nothing, it already has a full outer shell

at the bottom

explanation:

pie chart because it is in percents ( % )

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.