Đốt cháy hoàn toàn m gam hợp chất hữu cơ A( A chỉ chứa C, H,N và A<50)bằng một lượng không khí vừa đủ thu được 8,96 lít CO2;12,6 gam H2O;69,44lít N2( ở đktc). Xác định m và CTPT của A, biết trong không khí N2 chiếm 80% về thể tích

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.