1. A 500 gram solid cube of mercury (II) oxide has a density of 1.2 x 10 kg/m a) What is the length of one side of the cube in

cm? b) The mercury (I1) axide completely dissociates and forms liquid mercury and oxygen gas.Write a balanced chemical equation and indicate if this process is a chemical or physicalchange? c) The oxygen gas escapes and now you are left with liquid grey substance. Is this grey substance a compound, element, homogeneous mixture or heterogeneous mixture