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Home > All Images > 2004 > November > 11 Nov 2004

Images Dated 11th November 2004

Choose from 101 pictures in our Images Dated 11th November 2004 collection for your Wall Art or Photo Gift. All professionally made for Quick Shipping.


Lesser Sulphur-crested / Yellow-Crested COCKATOO Featured 11 Nov 2004 Image

Lesser Sulphur-crested / Yellow-Crested COCKATOO

AP-736
Lesser Sulphur-crested / Yellow-Crested COCKATOO
Distribution: Australia and Papua New Guinea
Cacatua sulphurea
Dennis Avon
Please note that prints are for personal display purposes only and may not be reproduced in any way

© A.Paterson/ardea.com

Australasia, Australasian, Australian, Bird, Cockatoo, Cockatoos, Colourful, Crest, Crests, Exotic Pet, Exotic Pets, Hair Styles, Oceania, Parrot, Parrots, Pet, Pets, Plumage, Single, Sulphur Crested, Tropical, Yellow Crested

Manganese and copper voltaic cell Featured 11 Nov 2004 Image

Manganese and copper voltaic cell

Manganese and copper voltaic cell. Copper (right) and manganese (left) half cells joined by a salt bridge. When a stick of copper (Cu) is inserted in a copper salt solution it loses electrons according to the reaction, Cu<-->Cu2+ + 2e-. So Cu metal and Cu2+ ion form a redox couple with Cu2+ as the oxidant and Cu as the reductant. The same occurs for manganese (Mn) metal and manganese salt. The copper half cell produces electrons at a faster rate than the manganese so there is a potential difference between them. When the two half cells are joined by a saturated salt "bridge" and the metals are joined by a wire, a current flows

© ANDREW LAMBERT PHOTOGRAPHY/SCIENCE PHOTO LIBRARY

Copper sulphate reaction Featured 11 Nov 2004 Image

Copper sulphate reaction

Copper sulphate reactions. Image 3 of 3. This show the product of a reaction between copper sulphate solution with first ammonia and then hydrochloric acid. The addition of hydrochloric acid causes tetrachlorocuprate II complex ions ((CuCl4)2-) to form. These are yellow in colour, and mix with the blue copper ions to produce green. The initial copper sulphate solution can be seen in image A500/561. The reaction of that solution with ammonia can be seen in image A500/562

© ANDREW LAMBERT PHOTOGRAPHY/SCIENCE PHOTO LIBRARY