I remember c/d. That's not a problem. But if you want 'c', you'll have to give me 'd'.
-- below the horizon
-- clear sky
Answer:
299,792,458 metres per second
Explanation:
More mass will in turn create more force in a collision.
The number of marbles in a collision will affect the outcome because they could bounce off each other and what not.
Answer:
hydrogen
Explanation:
pH is a measure of the ion concentration of hydrogen in a solution.
In chemistry, it literally means power of hydrogen ions and it is a measure of the molar concentration of hydrogen ions in a particular solution, thus specifying the acidity, neutrality or basicity of chemical solutions.
Mathematically, the pH of a solution is given by ![pH = -log 10[H^{+}]](https://tex.z-dn.net/?f=pH%20%3D%20-log%2010%5BH%5E%7B%2B%7D%5D)
Hence, a solution with a pH of 7 is neutral.
Also, a solution with a pH below 7 is acidic but basic if it's pH is above 7.