Wednesday, den 24. February 2010

For my chem lab, I have to identify 14 inorganic solutions using only the solutions and a centrifuge, pH paper, platinum wire loops, Meeker burners, and plastic spot plates. However, none of the solutions are labeled. Any hints/suggestions?! 0.1 M Ba(NO3)2 0.1 M FeCl2 1.0 M LiOH 0.3 M KSCN 0.3 M H2SO4 0.1 M [...]

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Wednesday, den 16. December 2009

how common are they in our world today, and are they relatively expensive? thanks

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Friday, den 6. November 2009

A centrifuge is a common laboratory instrument that separates components of differing densities in solution. This is accomplished by spinning a sample around in a circle with a large angular speed. Suppose that after a centrifuge in a medical laboratory is turned off it continues to rotate with a constant angular deceleration for 16 s [...]

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