Answer:
Coal
Explanation:
Once it's all been mined, there's no more. It's not like we grow it.
A second order reaction varies with the square of the concentration of the reactant. Therefore, halving the concentration will reduce the rate of reaction by a factor of 4.
The answer is E.
They both have 1 electron in their valence shell.....
Bromine (Br) is the only element listed that is a diatomic element. I believe that Bromine is going to be your answer.
