Suppose we titrate 20.0 mL of 0.20 M of formic acid (HCHO2, Ka= 1.8 x 10^-4) with 0.20 M KOH. Calculate the pH for the following:
a) before any base is added
b) when half of the formic acid has been neutralized
c) after a total of 15 mL has been added
d) at the equivalence point
In: Chemistry
Gains and losses that are neither unusual nor infrequent are reported as:
(Multiple Choice)
A: Part of continuing operations in after-tax dollars.
B: A prior period adjustment on the statement of retained earnings.
C: A gain or loss from disposing of the discontinued segment's net assets.
D: A gain or loss from operation of a discontinued segment.
E: Part of continuing operations in before tax dollars.
In: Accounting
Acid HX is a weak acid with Ka=1.0x10-6. A 50.0 mL sample of 1.00 M HX(aq) is titrated with 1.00 M NaOH(aq). What is the pH of the solution at the points listed below during titration?
A. pH 1.00M HX solution before titration:
B. pH after 25.0mL 1.00M NaOH added:
Please show work! Thank you!
In: Chemistry
Mrs Jones is receiving full strength Osmolite 1.5 360 mL of formula at 0800, 1200, 1600, 2000. She receives 30 mL of water flush before each feeding and 50 mL flush after each feeding. Calculate how much calories, protein and free water she is receiving daily
*Is Mrs Jones meeting the RDI for vitamins & minerals??
In: Biology
Using the table below, indicate which scale of measurement (nominal, ordinal, interval/ratio) is most appropriate for the variable indicated.
|
VARIABLE |
TYPE OF MEASUREMENT SCALE |
|
Alphabetical listing of students |
|
|
Academic major |
|
|
Number of minutes before and after an event |
|
|
Fear of crime (a lot, some, none) |
|
|
Speed (miles per hr.) |
|
|
Years of marriage |
|
|
Position when standing in line |
|
|
Religion |
In: Statistics and Probability
A 4-year 12% coupon bond has a yield of 10%.
a) What are its Macaulay Duration, Modified duration, and convexity
b) What is the actual price change, Modified Duration predicted price change and Modified Duration + convexity predicted change in price for an increase of 50 basis point in the yield.
Assume a flat term structure before and after the increase and annual coupons.
In: Accounting
Provide an example of how to REVISE straight line depreciation on an existing asset when there is a CHANGE in estimated useful life or salvage value by addressing the following points:
1. How many years of depreciation have already been recorded?
2. What is the revision in useful life or salvage value?
3. What was depreciation expense per year BEFORE AND AFTER the revision?
In: Accounting
Outline the steps to calculate the initial pH in the titration of a strong acid with a strong base?
Outline the steps to calculate the pH before the equivalence point of the titration of a strong acid with a strong base?
Outline the steps to calculate the pH after the equivalence point of the titration of a strong acid with a strong base?
What is the pH halfway to the equivalence point of the titration of a weak base with a strong acid?
In: Chemistry
A rock is thrown with an initial velocity of 30 m/s at an angle of 60° above the horizontal from a height of 1.5 m toward a cliff. After 4 seconds, the rock lands on the top edge of the cliff.
(a) Calculate the height of the cliff.
(b) Calculate the maximum height reached by the rock along its trajectory
(c) Determine the speed of the rock just before hitting the cliff.
In: Civil Engineering
Governments are in the business of providing information to potential buyers. The first serious provision of information on the health consequences of tobacco use appeared in the United States Report of the Surgeon General in 1964. (a) How would you represent this intervention in a supply and demand for tobacco diagram? Draw a graph to compare the outcomes before and after the intervention. (b) Did this intervention correct a market failure? Briefly explain.
In: Economics