Which of the following will be true if a equal amounts of an unknown weak acid and an unknown weak base are mixed with water? a. The solution will have a pH>7
b. The solution will have a pH<7
c. The solution will have a pH=7
d. The pH of the solution is impossible to determine without more information.

answer; talc and gypsum;

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: