The hydrogen ion concentration of a solution is 0.007 mol/L [H+]. What is the pH of this solution?
A. 0.007
B. 11.8
C. 2.2
D. 1.02
Answer: C
Mathematics
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A. y = 4 sin 
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D. y = 2 sin 
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Choose the appropriate sketch for the indicated geometric object.Acute angle ?DEF
A. 
| D? | E? | F |
B.
C.
D.
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Write the equation of the line in 
form, given the slope and y-intercept.Slope is - 
; and y-intercept is 
A. y = 
x + 
B. y = - 
x + 
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