The chemical acidity of a solution is measured in units of pH: where is the hydrogen ion concentration in the solution. If a sample of rain has a pH of 3.4, how many times higher is its than pure water's, which has a pH of 7?

a.

b.

c. 7

d.

e.


d.

Mathematics

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Give the meaning of the metric prefix.hecto

A. 10
B.
C. 1000
D. 100

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Determine algebraically whether the function is even, odd, or neither even nor odd.f(x) = x + 

A. Even B. Odd C. Neither

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Divide. Round your answer to the nearest hundredth when necessary.2 ÷ 5

A. 0.4 B. 4 C. 1.4 D. 14

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Find the vertex of the parabola.(x - 3)2 = 12(y - 1)

A. (1, 3) B. (3, 1) C. (-3, -1) D. (-1, -3)

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