How much of solution be mixed to prepare buffer
You need to prepare 100.0 mL of a pH=4.00 buffer solution using 0.100 M benzoic acid (pKa = 4.20) and 0.140 M sodium benzoate. How much of each solution should be mixed to prepare this buffer?
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Rondeli Corporation is considering investing in a new facility. The estimated cost of the facility is $2,045,000. It will be used for 12 years, then sold for $600,000.
Question: He and O2 gases are mixed. A 40L He cylinder with 10atm pressure is connected to a 10 L O2 cylinder with 5atm pressure. The valve between them is opened and the gases completely mix. What is the mole fraction of O2?
Sulfuryl chloride, SO2Cl2, decomposes when heated:
Orasco Company is considering purchasing new equipment for $450,000. It is expected that the equipment will produce net annual cash flows of $55,000 over its 10-year useful life. Annual depreciation will be $45,000.
The Milling Department uses standard machine hours to allocate overhead to products. Budgeted volume for the year was 36,000 machine hours. A flexible budget is used to set the overhead rate.
Calculate the wavelength of the emitted photon when an electron drops between the N = 4 and N = 3 energy levels in a hydrogen atom.
Asaki Company accumulates the following data concerning a proposed capital investment: cash cost $220,000, net annual cash flows $40,000, present value factor of cash inflows for 10 years 5.65 (rounded).
If a second sample of chloroform is found to contain 28.6 g of carbon, what is the total mass of chloroform in the second sample?
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