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Question 1. A liquid adhesive consists of polymer dissolved in a solvent. the amount of polymer in the solution is important to the application. an adhesive dealer receives an order for 3000 Ib of an adhesive solution containing 13% polymer by weight. on hand are 500 Ib of 10% solution and very large quantities of 20% solution and pure solvent . caculate the weight of each that must be blended together to fill this order. use all of the 10% solution .
Question. A polymer blend is to be formed from the three compounds whose composition and approximate formulas are listed in the following table. determine the percentages of each composition .composition A B C D(desired mixture)(CH4)x 25 35 55 30(C2H6)x 35 20 40 30(C3H8)x 40 45 5 40total 100 100 100 100
How would you decide to blend compounds A,B and C to achieve the desired mixture D [ (CH4)x = 10%, (C2H6)x = 30%, (C3H8)x = 60% ] ?
Question 3. A manufacturer of briquettes has a contract to make briquettes for barbecuing that are guaranteed to not contain over 10% moisture or 10% ash . the basic material used has this analysis ; moisture 12.4%, volatile material 16.6%, carbon 57.5%, and ash 13.5%. to meet the specifications (at their limits) the manufacturer plans to mix with the base material a certain amount of petroleum coke that has this analysis ; volatile material 8.2%, carbon 88.7%, and moisture 3.1%. how much petroleum coke must be added per 100Ib of the base material?
Calculate the volume in liters occupied by 0.350 moles of propane gas at a pressure of 0.850 atmospheres
What is E for the transition of an electron from n = 7 to n = 4 in a Bohr hydrogen atom. What is the frequency, of the spectral line produced
What is the solubility of CaF2 in a solution that has an equilibrium concnetration of 0.01 M EDTA ^ 4- (aq)? Ksp (CaF2) = 3.9 x 10^-11 and Kf for [Ca(EDTA)]2- = 5.0 x 10^10
Oxygen gas at 34.5ºC expands from 34.5L to 45.7L against a constant pressure of 750mmHg. What is the work done in joules by the system
Problem- A 0.682 g sample of aluminum metal was reacted with dilute sulfuric acid and the hydrogen evolved was collected over mercury at a barometric pressure of 737 torr and a temperature of 22 degrees C. What volume of hydrogen gas was collected
Problem- The components listed on the label of a typical box of salt are sodium chloride, sodium silicoaluminate, sodium Thiosulfate, and potassium iodide. On the basis of its ingredients, would you conclude that table salt is a substance or mixtu..
Benzene (C6H6) is a trace component of gasoline. What is the mole ratio of benzene to n-octane in the vapor above a solution of 35.0% benzene and 65.0% n-octane by mass at 25 degrees C
a solution of ethanol c2h5oh in water is prepared by dissolving 77.0 ml of ethanol density 0.79 gcm3 in enough water
These two substances reach thermal equilibrium at a temperature of 64.2 degree celsius. If the specific heat capacity of substance "B" is 1.17 J / g-C, what is the specific heat of substance "A". (assume no heat is lost to the surroundings)
If you electrolyze 150. g CH3SO2F, how many grams of HF are required and how many grams of each product can be isolated
How long will it take 10.0 mL of nitrogen gas to effuse through a porous barrier if it has been observed that 89.1 minutes are required for 10.0 mL of Cl2 gas to effuse through the same barrier
A 2059-kg elevator moves with an upward acceleration of 2.0 m/s2. What is the tension in the cable that supports the elevator
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