the pH of a HClO4 solution was measured as 4.251. What would be the concentration of HClO4 in this solution

Explanation:

If is given then hydronium ion concentration is equal to

The hydronium ion concentration can be found from the pH using the following formula:

Hydronium ion concentration =

As the pH of a HClO4 solution was measured as 4.251,

put

So,

Concentration of HClO4 in the solution =

mechanics (greek   is that area of science concerned with the behaviour of physical bodies when subjected to forces or displacements, and the subsequent effects of the bodies on their environment. the scientific discipline has its origins in ancient greece with the writings of aristotle and archimedes[1][2][3] (see history of classical mechanics and timeline of classical mechanics). during the early modern period, scientists such as galileo, kepler, and newton laid the foundation for what is now known as classical mechanics. it is a branch of classical physics that deals with particles that are either at rest or are moving with velocities significantly less than the speed of light. it can also be defined as a branch of science which deals with the motion of and forces on objects. the field is yet less widely understood in terms of quantum theory.

explanation:

i'm assuming that the correct answer is indeed the first one/ "a"..