Answer:
Explanation:
As we know that the formula for pH is
![pH = -[log H+]\\](https://tex.z-dn.net/?f=pH%20%3D%20-%5Blog%20H%2B%5D%5C%5C)
It is also given in the question that one pH unit represents the 10 fold change in the concentration of hydrogen ion.
Now for lemon juice whose pH is 2, hydrogen ion concentration is equal to
And for pure water whose pH is 
, hydrogen ion concentration is equal to
Thus, the H+ ion concentration in lemon juice is 
times greater than the pure water.
I believe that C would be the best answer to this question.
I really hope that this helps you out
I believe it is they are reactants because they’re present before the reaction. O2 and glucose are reactants in the cellular respiration process. The product is ATP
The flu is a viral disease.
Cholera is a bacterial disease in the small intestine.
Measles is a viral disease.
The common cold is a viral disease.
Cholera is the only bacterial disease in this list.
