question 4.1.6 :-
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 4.1.10 :-
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 40
total 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 4.1.22
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 ?
question 6.1.2
see attachment
question 6.2.2
see attachment
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