Plz help I’ve been with this for like 2 hours Ik it’s sad my momma didn’t give me a brain

12- cold air is more dense then hot

13- Make days warmer (sorry if thats wrong!! :)

cold air is more dense then hot

 Make days warmer

Explanation:

може ли да зареждате повече информация, моля

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.