- In question number 14 , what is the right answer and why ? Chemistry?

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Ph of a prefect neutral solution is ? a)0 b)7 c)1 d)9? I have a B&N membership card but where do you find the number? The difference of distances to (x,y) from (10,0) and (-10,0) is 12. What is the equation of the parabola? To which set of numbers does the number -12 belong? A.natural numbers
B.whole numbers
C.integers
D.irrational numbers? Can anyone find the derivate of: exp(3x^3-1)^3?