Catalysts affect the chemical reactions that take place within the body. what function do catalysts perform in chemical reactions?
a. catalysts slow down the rate of chemical reactions.
b. catalysts are always formed by chemical reactions.
c. catalysts are used up during a chemical reaction.
d. catalysts lower the activation energy of a chemical reaction.

catya your not at all which answer i've seen you do this on another question!

c is having 4 valence electrons and is bonded to three hydrogens and one sulphur atom, therefore, the number of bond pair is equal to four. as all the valence electrons are used in forming the bonds so, there is no lone pair left on carbon.

s is having 6 valence electrons and is bonded to one other sulfur atom and one carbon atom, therefore, the number of bond pair is equal to 2. as only two valence electrons are used in forming the bonds so, four electrons are left. therefore, two lone pairs are present on s.

explanation:

0.07 g/cm³

1.37 g/cm³