The pH of a solution is 9.4. Find the hydronium ion concentration in moles per liter. Use scientific notation and round the mantissa to the nearest tenth.

A.
B.
C.
D.
E. none of these


Answer: C

Mathematics

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Provide an appropriate response.End-of-year book value is:

A. the previous year's end-of-year book value minus the current year's depreciation B. all are appropriate references to end-of-year book value C. total cost minus accumulated depreciation D. figured differently depending on which year it is in the depreciation schedule

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Solve the problem.A bakery sold 87 pies for $1.34 each. What was the total amount of the sale?

A. $116.59 B. $117.68 C. $116.68 D. $116.58 

Mathematics

Graph the rational number on a number line.-2.8

A.
B.
C.
D.

Mathematics

For the problem below, ? is a central angle in a circle of radius r. Find the length of arc s cut off by ?. ?  ? = 335°, r = 5 inches. ?  If the answer needs rounding, round it to three significant digits. ?  s = __________ inches

What will be an ideal response?

Mathematics