Choose the appropriate technique below for separating these mixtures into their constituents. (Diffusion, Solvent Extraction, Chromatography, Sublimation, Fractional Distillation and Distillation.
I. Solid iodine and solid calcium carbonate
II. Pigments extracted from the bark of a tree
III. Solid sodium chloride and solid sulphur
IV. Water and propanol
V. Liquid
VI. Solid sodium carbonate and solid calcium
VII. Gaseous hydrogen and gaseous sulphur (iv) oxide.

Zinc + lead(ii) nitrate yield zinc nitrate + leadwhat's the chemical equation for this?

Two people each hold the end of a rope and create waves by moving their arms up and down. this wave is best classified as a transverse wave because a) both the rope particles and the wave are moving in the same direction. b) the wave is moving up and down as the particles of the rope move horizontally. c) the wave is moving horizontally as the particles of the rope move up and down. eliminate d) the wave is moving in a parallel direction with the motion of the person's arms.

Write a balanced equation showing the formation of copper (ii) nitrite from its elements