Lead had been used in plumbing and other products since ancient times. how have chemists contributed to our understanding of lead today? a. they have shown how lead can build up and cause damage in the human body. b. they have described how the romans used lead in plumbing. c. they have defended lead as a useful material for many products. d. they have passed laws that prohibit the use of lead.

100 points answer quick the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

What is the empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5

Draw the structure for 5-isopropyl-2-methyl-3-nonene