Solve the problem.pH = -log10[H+] Find the [H+] if the pH = 2.4.

A. 3.98 × 10-2
B. 2.51 × 10-2
C. 2.51 × 10-3
D. 3.98 × 10-3


Answer: D

Mathematics

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Solve the problem.A force of 1300 lb compresses a spring from its natural length of 19 in. to a length of 13 in. How much work is done in compressing it from 13 in. to 8 in.?

A. 9200 in.-lb B. 18,000 in.-lb C. 0.20 in.-lb D. 2700 in.-lb

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Evaluate the integral. dx

A.  + C
B.  + C
C.  + C
D. 5 + C

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Find the sum of all real solutions of the equation. ? ?

A. 8 B. -8 C. 12 D. -12 E. 0

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Write the ratio in fractional notation in lowest terms.19 nickels to 6 dollars

A.
B.
C.
D.

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