How does the law of conservation of mass apply to this reaction: CH + O2 + 2H2O + 2002? o Only the oxygen needs to be balanced. There are equal numbers of hydrogen and carbon
The law of conservation of mass has already been applied. There is an equal number of each element on both sides of
O the equation
Each element needs to be balanced
O
o
The equation needs to be balanced. There are fewer oxygen atoms in the equation than hydrogen or carbon

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.