You would divide 140 (How many electrons) by the numbers of lines.
That is called condensation
I think the answer is 47.1 . I'm not sure. Iv'e done it before but I haven't got my grade for the answer yet. Hope this right and hope it helps!
Answer:
If the reactants in the chemical reactions are known, then the products can be predicted because the pattern of the chemical reactions is being followed. The pattern for a single replacement is A + BC --> AC + B. This is like the Hear It Pop Chemical Reaction which is also an example of the single replacement.
Explanation: