Question

Calibration Curve Standard Number [Fe mg/ml Absorbance 0.001 0.228 2 0.002 0412 0.003 s. 622 0.004 0802 esos 0.990 Show example calculation for Fe concentration of standard number 1: 5 L Use Excel to construct the calibration curve. Include the regression line and equation. Submit with your report Mass of unknown Fe sample_0.1026 Sample unknown mass diluted to 50 mL Trial Sample solution Absorbance % Fein sample per trial (mL) Dilution Volume ( 50 50 50 21 31 0,532 6 020 Ang. % Fe Std. Des Show example calculation of % Fe for one trial. Show calculation for average and standard deviation of the three trials.

Answer 1

1.0 0.8 0 0.6 .6 0.4 - 0.2 0.001 0.002 0.00 0.005 0.003 0.004 Concentration

B Linear Fit of Sheet1 B y = a + b*x Equation Plot Weight Intercept Slope Residual Sum of Squares Pearson's R-Square(COD) Adj. R-Square No Weighting 0.0366 +0.00842 191.4 +2.53772 1.932E-4 0.99974 0.99947 0.9993
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