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An unknown sample solution whose concentration is 1:55 103 g=L is placed in a 1cm clear holder and found to have a transmittance of 44%. The concentration of this sample is changed such that its transmittance has increased to 57%. Calculate the new concentration of the sample.
consider the binary cycle using the sodium and steamwater in the sketch below and operating at conditions in table 1.
Neglecting stator resistance and rotational and stray-load losses, and assuming constant rotor resistance, calculate the starting torque and the maximum torque in per-unit of full-load torque, as well as the slip at which the maximum torque occurs..
Why do displacement reactions produce hydrogen? eg: nails dipped in a solution of acetic acid used to clean old pennies.
Using the concepts of material balances, determine how much (in moles and lbs) air is needed and CO2, N2, CO, and H2O are emitted for every gallon of gasoline burned in your car's engine.
If the scatter in the individual samples of the previous problem is reduced to that listed below, would there be a justification (0.95 probability level) for saying there was a difference between the two materials? (Note that mean values of the tw..
Find the net force experienced by a positive charge q = 2 µC that is placed midway between the two charges.
What is the size of the Anopheles gambiae genome? How many chromosomes does it have? How many genes does it have?
Find the magnitude of the force P, required by the person pushing the vehicle to give the car an acceleration of 1 ft./s^2. The coefficient of kinetic friction between the car and the street is (.25).
ECH 3023: Mass Balance around two distillation Columns Using Excel, Derive the simultaneous linear mass balance equations for the system using all the information provided.
Often, the gene sequences placed on microarray slides are of unknown function. Suppose that an experiment identifies such a gene as being important for formation of a particular type of tumor. Explain how you might use resources at NCBI to identif..
Piston arrangement: compressing air, A piston arrangement has been developed to compress air adiabatically from 360C
If 199 atoms of bohrium-267 could be synthesized, how much time would elapse before only 11 atoms of bohrium-267 remain? What is the expected electron configuration of elemental bohrium?
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