Solve the problem.pH = -log10[H+] Find the [H+] if the pH = 5.4.
A. 2.51 x 10-6
B. 3.98 x 10-6
C. 2.51 x 10-5
D. 3.98 x 10-5
Answer: B
Mathematics
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Evaluate the expression using the given values.
x = 4, y = 9
A. 87 B. -39 C. -87 D. 39
Mathematics
An arithmetic sequence is given. Find the common difference and write out the first four terms.{sn} = {ln 6n}
A. d = ln 6; s1 = ln 6, s2 = 2 ln 6, s3 = 3 ln 6, s4 = 4 ln 6 B. d = ln 6; s1 = ln 6, s2 = ln 12, s3 = ln 18, s4 = ln 24 C. d = n ln 6; s1 = ln 6, s2 = 2 ln 6, s3 = 3 ln 6, s4 = 4 ln 6 D. d = n ln 6; s1 = ln 6, s2 = ln 12, s3 = ln 18, s4 = ln 24
Mathematics
Graph the equation.x2 - 6x - 8y + 41 = 0
A. 
B. 
C. 
D. 
Mathematics
Graph the function.y = csc
A. 
B. 
C. 
D. 
Mathematics