A solution is an acid if its pH is less than 7 and a base if its pH is greater than 7. The pH is defined by 
where [H+] is the concentration of hydrogen ions in the solution. Use this information to answer the question.A mixture has a pH of 5.1. Find the concentration of hydrogen ions [H+] in the mixture. Is the mixture an acid or a base?
A. 105.1, acid
B. 10-5.1, acid
C. 10-5.1, base
D. 105.1, base
Answer: B
Mathematics
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Solve the problem.Construct a frequency polygon for the given data.
A. Frequency
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B. Frequency
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Mathematics
Find the product.(a + b - c)(a - 6b + 3c)
A. a2 - 7ab + 2ac - 6b2 + 9bc + 3c2 B. a2 + 5ab + 2ac - 6b2 - 9bc - 3c2 C. a2 - 5ab + 4ac + 6b2 + 9bc - 3c2 D. a2 - 5ab + 2ac - 6b2 + 9bc - 3c2
Mathematics
Simplify the ratio.$27 to $144
A. 
B. 
C. 
D. 
Mathematics
Subtract.-5.9 - (-3.8)
A. -2.1 B. -9.7 C. 2.1 D. 9.7
Mathematics