Question 13 of 25
2 points
what is the relationship between chemicals and cancer?
o
a. there is no treatment available for cancer caused by chemicals.
b. more chemists have died from cancer than from any other cause.
c. some chemicals cause cancer, whereas others have been
designed to fight it.
o
d. chemists have a greater chance of getting cancer than the rest of
us.

C. Some chemicals cause cancer, whereas others have been

designed to fight it.

Explanation: Exposure to casinogens can lead to cancer this are chemicals also some chemicals(drugs) have been developed to combat the effect of cancerous cells. Hence the relationship between cancer and chemicals

it is stable as it is in group 0 which have full outer shells of electrons

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.