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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?
If 100 mL of a solution containing 0.001 g of a compound with a molecular weight of 150 has a measured absorbance in a 1-cm cell of 2.0, what is the compound's molar extinction coefficient?
Calculate the pH at the equivalence point for the titration of .25 M CH3COOH with M NaOH.
How many moles of methane occupy a volume of 2.00 l at 50.0*C and0.500 atm? (R=0.0821 atm*L/molxK)
Use the Clausius-Clapeyron equation to estimate the boiling point of water at 24.0.torr pressure. The average enthalpy of vaporization for water over the relevant temperature range is 42.34 kJ/mol.
When a solution of barium nitrate as well as a solution of copper (II) sulfate are mixed, a chemical reaction produces solid barium sulfate as well as an aqueous solution of copper (II) nitrate. An unknown amount of barium nitrate is dissolved in ..
The molar heat of vaporization of ethanol is 39.9 kJ/mol and the boiling point of ethanol is 78.3°C. Calculate ?S for the vaporization of 0.50 mol ethanol.
A mixture of 4.55atm of H2 and 4.55atm of I2 is contained in a 1.0L vessel at 430 degree C. The equilibrium constant (Kp) for the reaction: H2(g) + I2(g) 2HI(g) at this temperature is 54.3. Determine the equilibrium partial pressures of H2,
By comparing the Charles's law equation to the linear equation, y= -0.171x + 46.837, where y is volume and x is temperature, determine the value of k.
The density of the sample is 1.01 g/mL. The titrant is 1.017 M NaOH. The average volume of titrant required to titrate 25.00 mL subsamples of the vinegar is 20.78 mL. What is the concentration of acetic acid in the vinegar? Express your answer the..
What would be the effect on the results of mistakenly adding 2.43 x 10^-3g Mg to 4.0mL of 0.1M HCl, rather than to 4.0mL of 1.0M HCl as instructed
What difference would you expect to see between the ionizaition energy of element 115 and that of element 116? Which IE would be larger? Explain in terms of expected electron configurations.
calculate the percent composition of sodium in sodium chloride. tom yum soup contains 420 mg sodium and 30 mg potassium
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