The pH of a 100.0 mL buffer solution of 1.25M HCN and 1.25M NaCN is 9.21....
The pH of a 100.0 mL buffer solution of 1.25M HCN and 1.25M NaCN is 9.21. Because the concentrations of the HCN and NaCN are equal, pH = pKa. Calculate the pH after 10.0 mL of 0.200M KOH have been added.
In an effort to cut costs and improve profits, any US companies have been turning to...
In an effort to cut costs and improve profits, any US companies have been turning to outsourcing. In fact, according to Purchasing magazine, 54% of companies surveyed outsourced some part of their manufacturing process in the past two to three years. Suppose 555 of these companies are contacted. What is the probability percentage that 338 or more companies outsourced some part of their manufacturing process in the past two or three years? Round the percent to two decimal places. to...
7) Describe the cause of groundwater depletion and use the Ogallala Aquifer as an example.
7) Describe the cause of groundwater depletion and use the Ogallala Aquifer as an example.
List the set of quantum numbers for all the valence electrons of Boron
List the set of quantum numbers for all the valence electrons of Boron
Following are transactions for Valdez Services, a company owned by Brina Valdez. Brina Valdez invested $27,300...
Following are transactions for Valdez Services, a company owned by Brina Valdez. Brina Valdez invested $27,300 cash in the company. The company provided services to a client and immediately received $840 cash. The company received $13,700 cash from a client in payment for services to be provided next year. The company received $2,100 cash from a client in partial payment of accounts receivable. The company borrowed $4,800 cash from the bank by signing a note payable. 1. Prepare general journal...
1.A lactic acid/lactate ion buffer solution contains 0.43 M HC3H5O3 and 0.62 M C3H5O3−, respectively. The...
1.A lactic acid/lactate ion buffer solution contains 0.43 M HC3H5O3 and 0.62 M C3H5O3−, respectively. The Ka value of lactic acid is 1.4×10−4. Calculate the pH of this buffer. 2. Enter the formula of the conjugate base for the acid H2PO4−. Enter the formula of the conjugate base for the acid CH3−NH3+. Enter the formula of the conjugate base for the acid HSO4−. Enter the formula of the conjugate base for the acid HNO2. Enter the formula of the conjugate...
Which of the following statements is not correct about the effects of the​ euro? A. The...
Which of the following statements is not correct about the effects of the​ euro? A. The euro helped economic growth in euro zone countries by making it easier for consumers and firms to buy and sell across borders. B. The euro is used as currency in​ Germany, France, and Italy. C. The euro increased the ability of participating countries to run independent monetary policies. D. The euro reduced costs and increase competition.
The magnetic field 36.0 cm away from a long, straight wire carrying current 3.00 A is...
The magnetic field 36.0 cm away from a long, straight wire carrying current 3.00 A is 1670 µT. (a) At what distance is it 167 µT? 360 cm (b) At one instant, the two conductors in a long household extension cord carry equal 3.00-A currents in opposite directions. The two wires are 3.00 mm apart. Find the magnetic field 36.0 cm away from the middle of the straight cord, in the plane of the two wires. nT (c) At what...
How many years will you need to provide a steady retirement income for yourself based on...
How many years will you need to provide a steady retirement income for yourself based on how long you are likely to live? Don't assume you can work until normal retirement age - your health may not permit that. Plan to retire a few years early to give yourself a safety buffer in case your health deteriorates sooner than planned or in case you need to stay home to care for a loved one. I am likely to live until...
You observe an X-ray source to vary on a timescale of 0.001 seconds. What is the...
You observe an X-ray source to vary on a timescale of 0.001 seconds. What is the upper limit for the size of the X-ray emitting region? What is the mass of a black hole with a Schwarzschild radius of this size?
Which if the following is not a purpose of the medical record Where clinical disciplines can...
Which if the following is not a purpose of the medical record Where clinical disciplines can document their disagreements Defense in a malpractice case Coordinating services across disciplines Demonstrating compliance with regulations
​​​​ QUESTION 7 Suppose the observational units in a study are the patients arriving at an...
​​​​ QUESTION 7 Suppose the observational units in a study are the patients arriving at an emergency room on a given day, 11 Nov 2019. For the following indicate whether it can legitimately be considered a variable or not: Whether or not men have to wait longer than women yes no 5 points    QUESTION 8 A survey company published results of a survey stating that 56% of the 600 randomly sampled residents planned to set off firereworks on July...
Find the minimum value of the average cost for the given cost function on the given...
Find the minimum value of the average cost for the given cost function on the given intervals. Upper C left parenthesis x right parenthesis equals x cubed plus 36 x plus 432C(x)=x3+36x+432
10. Animal-like protists, PROTOZOANS. They digest their food inside and use animal-like type of nutrition: _______________________________...
10. Animal-like protists, PROTOZOANS. They digest their food inside and use animal-like type of nutrition: _______________________________ ( heterotrophic or autotrophic? ), but cannot be with animals in KIngdom Animalia because protozoans are __________________________ Protozoans are classified according their type of locomotion. Some of those structures can be using for feeding as well. Protozoans can use pseudopodia, flagella, cilia or none of such things. Specify which of these structures are used by particular protozoans : Amoeba ________________________ Giardia lamblia____________________ Forams _________________________...
Predict if the following pairs of ions will undergo reaction or not, based on solubility at...
Predict if the following pairs of ions will undergo reaction or not, based on solubility at 25°C. If they will, write the precipitation reaction which occurs between them.   Na2SO4 and BaCl2 Fe(NO3)2 and  NaCl Pb(NO3)2 and NaCl ZnCl2 and NaOH Ca(NO3)2 and LiCl
Which of the following is not a factor when determining residency? State that issued taxpayer's driver's...
Which of the following is not a factor when determining residency? State that issued taxpayer's driver's license. Amount of time spent in California versus elsewhere. Where the taxpayer will pay the least taxes. Location of principal residence.
compare NPSGs to the NQFs set of 34 safe practices?
compare NPSGs to the NQFs set of 34 safe practices?
In a coal-mining company town, one employer is the sole buyer of labor services. The labor...
In a coal-mining company town, one employer is the sole buyer of labor services. The labor supply curve is given by QL = –700 + 100W. Invertthelaborsupplycurvesothatthewageisexpressedintermsofthe quantity; then graph the quantity of labor supplied at each possible wage. Find the firm’s marginal expenditure curve,and graph it. Explainwhythefirm’smarginalexpenditureishigherthanthelaborsupply curve at all possible hiring levels.
Can someone please explain to me when an object is being thrown downward, what does the...
Can someone please explain to me when an object is being thrown downward, what does the velocity versus time graph shown? will the acceration be negative or constant?
A can of soft drink, 12-cm high and 6-cm diameter, is initially at 20°C. It is...
A can of soft drink, 12-cm high and 6-cm diameter, is initially at 20°C. It is placed in a refrigerator where the air is at 0°C. The convective heat transfer coefficient associated with the outer surface of the can is 10 W/m2 °C. Assuming the properties of the drink to be those of water and that the heat capacity of the container is negligible, estimate the time taken for the temperature of the drink to reach 5°C. USING EES PLEASE
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