Ph is the a measure of the
1) concentration of hydrogen ions in solution
2) concentration of compounds in solution
3) concentration of oh- in solution

The correct answer is:

1) Concentration of hydrogen ions in solution

- I can verify this is correct because I took the test.

for step 7 table c on the lab "newtons law of action"   the average time it took the car to travel .25 meters   was 1.92 seconds.

the average time it took the car to travel 0.50 meters was 2.61 seconds

hope this : )