A student prepared a stock solution by dissolving 10.0 g of NaOH in enough water to make 150.0 mL of solution. She then took 15.0 mL of the stock solution and
diluted it with enough water to make 65.0 mL of a final solution. What is the
concentration of the final NaOH solution?

im pretty sure its b

since electrons are negative the answer is neagtaive

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.

answersilicon (si); oxygen (o);