Which of the following chemicals can damage the central nervous system, cardiovascular system, reproductive system, hematological system, and kidneys with overexposure? (1 point)

a. asbestos

b. lead

c. silica

d. welding fumes

The correct answer is option B, that is, lead.

Explanation:

Lead is considered as one of the most harmful poison for the workers for many years. It possesses the tendency to get captivated into the body via the process of inhalation. Lead can get inside in the form of fume, dust, or mist, however, it can also get ingested.  

Lead can virtually destruct all the human body systems, and it can even influence the growth of the new ones of the influenced individual. The exposure by lead can be chronic or acute.  

number of molecules / avogadro's number * molecule molecular = mass

explanation:

we define a gram-molecular weight as the mass of one mole of any element or compound. a mole contains avogadro's number of units (molecules) –  

6.022

x

10

23

. so, dividing the number of molecules by avogadro's number gives us the number of moles. multiplying that by the molecular weight gives us the mass. from the periodic table we find the gram-molecular weight of u to be238 and of f to be19. so,  

u

f

6

will have a gram-molecular weight of 352g.