A calibration curve of KCl conductivity (y-axis) vs concentration (mass percent, x-axis) is made. The equation of line of best fit is y = 578.3x + 0.380 and the R 2 is 0.9998. Based on this data what is the mass percent of an unknown KCl solution with a conductivity of 2,788 uS/cm?     6.55 %     6.12 %     4.14 %     3.98 %     4.82 %

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