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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.
- Fall '09