Find the hydrogen ion concentration of a saturated solution of calcium hydroxide whose pH is 10.3. Round your answer to three decimal places.
?
A. 
gram-ions per liter
B. 
gram-ions per liter
C. 
gram-ions per liter
D. 
gram-ions per liter
E. 
gram-ions per liter
Answer: A
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Find the midpoint of the segment having the given endpoints.
and 
A. 
B. (196, 4)
C. 
D. (64, 256)
Solve. If necessary, round answers to the nearest hundredth.15 students were asked how much cash they had with them and the results were recorded.31, 34, 24, 19, 0, 5, 2, 58, 105, 29, 24, 87, 63, 17, 20How many students had less cash than the mean?
A. 8 B. 4 C. 11 D. 10
Conduct a survey to determine whether there is a significant correlation between history scores in the 6th grade and amount of TV viewing.
What will be an ideal response?
Change the exponential expression to an equivalent expression involving a logarithm.5-2 = 
A. log1/255 = -2
B. log5
= -2
C. log5-2 = 
D. log-2
= 5