Outline 2 - Measure the mass of original sample. Calculate...

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Outline Separation of the Components of a Mixture With a hotplate heat individual objects. Measure the mass of evaporating dish, original sample, and again the evaporating dish after subliming NH4CL. With the measurements calculate the mass of NH4CL and the percent of NH4CL. Measure the mass of a 400 ml beaker, a watch glass, and NaCl. Calculate the percent of NaCl. Measure the mass of evaporating dish and SiO2. Calculate percent of SiO_2_.
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Unformatted text preview: Measure the mass of original sample. Calculate mass (NH4Cl + NaCl + SiO2). Find the difference of these weights. Calculate percent recovery of matter (g matter recovered/ g original sample X 100). Account for your errors (Percent error = |correct value - measured value| X 100) Lab Cautions Do not mix chemicals Do not weigh warm objects. Do not pipet by mouth....
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This note was uploaded on 03/10/2010 for the course ED 4070 taught by Professor Sweet during the Fall '09 term at Western Michigan.

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