JAYLA OTHER KIDS ANSWER OUR QUESTIONS DID YOU KNOW THAT BESTFRIEND
my sis just took the test the answer is
B.) An atom is solid material.
or An atom is a solid sphere.
Answer:
Which is a resource that the National Park Service manages?
A. memorials
B. wildlife refuges
Answer: 3.2
Explanation:
pH is the measure of acidity or alkalinity of a solution.
pH is calculated by taking negative logarithm of hydrogen ion concentration.
![pH=-\log [H_3O^+]](https://tex.z-dn.net/?f=pH%3D-%5Clog%20%5BH_3O%5E%2B%5D)
Thus as pH and 
are inversely related, a solution having lower pH will have more amount of concentration. And a solution having more pH will have less amount of concentration.
Thus the solution with lowest pH of 3.2 will have highest hydronium ion concentration.
Im pretty sure its neptune. Its mot pluto because its not a planet. Good luck.
