Describe a procedure to separate a mixture of sugar black pepper and pebbles

Evaluate this exponential expression,8. (2 + 3)2 – 42

From the choices provided below, list the reagent(s) in order that will react with cyclopentanone to form the compound shown below.

The solid xy decomposes into gaseous x and y: xy(s) m x(g) + y(g) kp = 4.1 (at 0 °c) if the reaction is carried out in a 22.4 l container, which initial amounts of x and y will result in the formation of solid xy?