A)Suppose that Li2O is added as an impurity to CaO. If the Li+substitutes for Ca2+, what kind of vacancies would you expect to form? How many of these vacancies are created for every Li+added?(b)Suppose that CaCl2is added as an impurity to CaO. If the Cl-substitutes for O2-, what kind of vacancies would you expect to form? How many of the vacancies are created for every Cl-added?

i'm pretty sure its b i might be wrong though!

po-215 i got it right on the quiz

gas

explanation:

smoke is the matter of a gas

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.