Quantities of 50 ml of 1 m hcl and 50 ml of 1 m naoh are combined in a constant pressure calorimeter. both solutions are initially at 24.4 c. calculate the final temperature of the combined solutions. ah=-56.2 kj/mol. (ans: 31.1 c)

explanation: it gains negative electrons, therefore becoming negatively charged. as charge cannot be created, nor destroyed, only transferred, this leaves the wool positive. now that they have opposite charges, the two items attract.

po-215 i got it right on the quiz

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.