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
Mathematics
Evaluate the integral.
dx
A. 
+ C
B. 
+ C
C. 
+ C
D. 
5 + C
Mathematics
Find the sum of all real solutions of the equation.
?
?
A. 8 B. -8 C. 12 D. -12 E. 0
Mathematics
Write the ratio in fractional notation in lowest terms.19 nickels to 6 dollars
A. 
B. 
C. 
D. 
Mathematics