Prelab for final - human eye. Thus, they would appear to be...

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Pre-Lab 1) A pigment is a material that changes the color of light it reflects as the result of selective color absorption. It is typically used in the textile and food industries to give way to different colors and color schemes, which essentially classifies it as a dye. 2) Lead was added to paint in a power form to enable it to stick to walls easier. Because lead is not soluble in water, it makes it harder for it to run, and thus make it easier for the painter to apply coats to walls and or other materials one wishes to paint. 3) These photosynthetic pigments would make excellent paint pigments for their greater ability to absorb light, would make them even better to reflect the absorbed light upon the
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Unformatted text preview: human eye. Thus, they would appear to be significantly brighter pigments against a wall for your eye is seeing all the photosynthetic respiration they are projecting. 4) Some characteristics of a good pigment in an oil based paint would be something that bonds easily and strongly to itself, for if it didnt have this component, then it would run a lot more similar to water based paints do. Another good characteristic would be that it is slow drying, to allow all the bonds to properly settle together. 5) You would need 8.12 mL of As(NO3)3 and 12.10 mL of Na2S to .1 M of Arsenic (III) Sulfate....
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This note was uploaded on 07/01/2009 for the course CHEM 151 taught by Professor Staff during the Spring '08 term at University of Arizona- Tucson.

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