Download a file from the itunes
Assume that the time required to download a file from the iTunes is exponentially distributed with mean equal to 4 minutes. What is the probability that a download will require no more than 2 minutes?
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Expected delivery within 24 Hours
A liter of a solution saturate at 25 degree c with calcium oxalate, CaC2O4 is evaporated to dryness giving a .0061 gm residue of cac2o4. Calculate the concentration of the ions and the molar solubility and the solubility product constant for the S
Water at 60 oF is flowing in a 6-in schedule 40 steel pipe that is 100 ft long. Calculate the maximum allowable volume flow rate if the energy loss due to pipe friction is to be limited to 180 ft-lb/lb.
Dinitrogen pentoxide decomposes in chloroform as a solvent to yield nitrogen dioxide and oxygen gas. The decomposition is first order with a rate constant of 1.0 x 10-5 s-1 at 45 degrees Celsius.
Global positioning satellites (GPS) can be used to determine positions with great accuracy. The system works by determining the distance between the observer and each of several satellites orbiting Earth.
Determine the mass flow rate of condenser cooling water, in kg/s, if the cooling water undergoes a temperature increase of 18oC with negligible pressure change in passing through the condenser.
Estimate the number of gallons of gasoline consumed by the total of all automobile drivers in the United States, per year.
You take 3.1789 g of a substance and place it into 100.0 g of benzene. The boiling point of this solution is found to be 80.5464 EC. What is the approximate molar mass of the substance?
If a charged blue board is held above the pie pan, will there be a net charge on plate 1? If there is a net charge, what sign will it have? Would there be a net charge on the second plate?
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