Mathematics, 18.12.2019 06:31 Izzyfizzy
After converting the nitrate into a purple dye, and measuring the absorbance of the purple dye on a spectrophotometer, a standard curve is used to convert the absorbance into concentration.
to make a standard curve, samples with known concentrations of no3- are run on the spectrophotemeter. the samples with known concentrations are called standards. a linear regression is then performed to relate the concentration of no3- to measured absorbance values.
here is a spreadsheet containing a simulated data set. there are standards and their related absorbance values, and there are samples from two sites that were diluted, prior to processing and measuring their absorbances. the groundwater originates from the upslope site, and the hope is that the microbes in the soil are removing the no3- from the groundwater before it reaches the downslope site.
Answers: 3
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A50-foot ladder is leaning against a vertical wall. if the base of the ladder is 45 feet from the base of the wall, find the angle the bottling of the ladder makes with the ground.
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Brent paid for 6 avocados with a $20.00 bill. he received $10.40 in change. construct and solve an equation can be used to find the price , of each avocados
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After converting the nitrate into a purple dye, and measuring the absorbance of the purple dye on a...
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