An aqueous solution of sodium hydroxide contains 20% naoh by mass. it is desired to produce an 8% naoh solution by diluting a stream of the 20% solution with a stream of pure water.(a) calculate the ratios (g h2o/g feed solution) and (g product solution/g feed ) determine the feed rates of 20% solution and diluting water needed to produce 2310 lb/min of the 8% solution.

fe 55.85 g/mol and h2o 18.02 g/mol.

35. a insulated cylinder of solid gold (k 310 kw/m-k) of radius v2 m and height 5 m is heated at one end until the temperature at each point in the cylinder is given by w(r, y, z) (30 z2)(2-(r2+ y2). determine the rate of heat flow across each horizontal disk given by z 1, z 2, and z 3, identifying which has the greatest rate of heat flow across it.

explanation: