Dual coding theory has been applied to many cognitive phenomena including: mnemonics, problem-solving, concept learning and language. Dual coding theory accounts for the significance of spatial abilities in theories of intelligence (e.g., Guilford).
Properties. 1  Atomic Symbol: Cr. 2  Atomic Number: 24. 3  Atomic Mass: 51.996g/mol1.  Element Category: Transition 1  Metal. Density: 7.19g/cm3 at 20Â° C. Melting Point: 3465Â°F 1  (1907Â°C) Boiling Point: 4840Â°F (2671Â° C) Mohâs Hardness: 5.5.
Potassium chromate, K 2 CrO 4, is a yellow crystalline substance, with a density of 2.732 g/cm 3 and a melting point of 968.3Â°C. It is readily soluble in water: 62.9 g at 20Â°C and 79.2 g at 100Â°C in 100 g of water.It is produced by the action of potassium hydroxide, KOH, on potassium dichromate, K 2 Cr 2 O 7.hromate. any salt or ester of chromic acid. Simple chromate salts contain the divalent ion, CrO 4 2-- , and are orange.