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May 12, 2015 … The favoured excitation maximum of PpIX at 635 nm for PDT corresponds to a 1.95 eV bandgap that falls in a window that can be readily achieved at low cost with aluminium gallium arsenide, gallium arsenide phosphide or other standard semiconductor materials for LED fabrication. For therapeutic …

Mar 7, 2013 … Chemistry (4CH0) Paper 2C. Edexcel Level 1/Level 2 … M2 dependent on M1 or near miss, e.g. Ca(OH)2(s). IGNORE references to … Acid used. Metal compound . Name Solid or aqueous solution sulfuric (acid) solid silver nitrate nitric (acid) solid/ aqueous/ solution correct formulae silver ethanoate. 5.

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Jan 28, 2012 … Mark Scheme (Results). January 2012. international gcse chemistry (4CH0). Paper 2C … 3 (a) (i). (ii). (iii) any named soluble metal sulfate / ammonium sulfate / (dilute) sulfuric acid correct formulae for all compounds. (mark consequentially on the sulfate given in. (a)(i), even if insoluble, except lead(II) …

Aug 23, 2012 … International GCSE. Chemistry (4CH0) Paper 2C. Edexcel Level 1/Level 2 Certificate … INTERNATIONAL GCSE CHEMISTRY PAPER 2C – SUMMER 2012 . Question number. answer. notes. marks. 1 a (i) M. 1 … aluminium/it is more reactive than iron/carbon. OR above iron/carbon in reactivity series. OR.

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American Window Company Blair, Wi Contents Makes sure all new Replacement window brands! … and Wi. … the company Choosing the right home improvement Jim went to work for Gene as a truck driver in 1973 after a two-year stint in the U.S. Army. He advanced from driver to service manager then onto sales. When he bought the company, he

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