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A state government is considering construction of a flood control dike having a life span of 18 years. History indicates that a flood occurs every 6 years, on average, and causes $700,000 in damages on each occasion. If the stateuses a MARR of8% per year and expects every public works project to have a benefit-cost ratio of at least 1.0, what is the maximum investment (to the nearestwhole dollar) that will be allowed for the dike?
Showing only Valence electrons, write an equation for the reaction that occurs between sodium, Na
prepare a schematic diagram of the work up procedure, including the column chromatography with acetylferrocene, diacetylferrocene, ferrocene
Calculate the average molar bond enthalpy of the carbon-chlorine
Number of protons & the number of neutrons in the nucleus of the element boron and potassium and the number of electrons in their 1st & 2nd quantum shells?
A 1- flask is filled with 1.45 of argon at 25 . A sample of ethane vapor is added to the same flask until the total pressure is 1.30 .What is the partial pressure of argon, , in the flask?
An empty Erlenmeyer flask weighs 261.9 g. When filled with water (d = 1.00 g/cm3), the flask and its contents weigh 465.2 g. What is the flask's volume in cm^3?
Equilibrium constant from standard potential data, Calculate the equilibrium constants of the following reactions at 25°C from standard potential data
What must the oxygen content (in percent by volume) be when the total pressure exerted on the diver is 4.0 atm?
an aqueous cacl2 solution has a vapor pressure of 81.1 mmhg at 50 c. the vapor pressure of pure water at this
How would you prepare methyl,phenyl,ketone starting with 1-bromobenzene without using a grignard reaction. please show reactants and intermediates
determine the mechanism for the synthesis of p-nitroacetanilide from acetanilide and hno3 nitric acid and h2so4
How many grams of aluminum metal must react with aqueous sodium hydroxide to produce 7.50 L of hydrogen gas at 12.5 degrees Celsius and 740 torr if the other product is aqueous Na3AlO3. 2 Al (s) + 6 NaOH (aq) ----> 3 H2(g) + 2 Na3AlO3(aq)
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