A) If 115mL of 1.3 mol/L barium nitrate reacts with 150mL of 0.95 mol/L lithium sulfate, determine the concentration of the barium and lithium ions in the final
solution. (8 marks)
Ba(NO3)2(aq) + LigSO4(ec) BaSO4(s) + 2 LINO3(aq)

Astudent made the lewis dot diagram of a compound as shown. mg is written with two dots shown on its top. an o is written on each side of mg. each o has six dots around it. an arrow is shown from one dot on mg toward the vacant space around the o on the right. another arrow is shown from the other dot on mg toward the vacant space around the o on the left. the title of the art is students lewis dot model. what is the error in the lewis dot diagram? an o atom should transfer all its six electrons to mg because the formula is mgo. both electrons of mg should be transferred to one o atom because the formula is mgo. the electrons should be transferred from each o atom to mg because mg has fewer electrons. the number of dots around mg should be four because it has to transfer two electrons to each o.