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Unformatted text preview: 2 value which is a measure of how well the data fits a straight line. (R 2 = 1 means a perfect fit). EACH INDIVIDUAL SHOULD MAKE THEIR OWN GRAPHS. Equation of linear fit: y=9378.3x + 0.0006 R 2 value: 0.9993 Fe tablet: Using the linear equation above, determine the mass of Fe in the tablet. Fe content of the tablet from the bottle (mg): 27 Fe tablet solution absorbance: 0.261 Fe tablet concentration from the equation (mol/L): 2.78×10-5 Calculated mass of Fe in the tablet (mg): 31.1 % error in Fe mass: 13.2% Compare the molar absorptivities (mol/L) (1 cm cuvette): from the linear fit equation =9378 from: 10 mL sample 9328.6 5 mL sample 9635.9 2 mL sample 9659.8 1 mL sample 8391.6 Average 9254.0 % error in average to the from the linear fit equation: 0.000141% ？...
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- Fall '07
- Chemistry, linear fit