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What is the standard concentration

A laboratory technologist was working on ELISA for measurement of HIV gp24, the standard was checked and was working nicely
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Sample Concentration(ppm) Absorbance Blank Standard 1 Standard 2 Standard 3 Standard 4 Standard 5 Soil sample 0.00 1.00 2.00
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How would you get the concentration(ppm) of a sample from absorbance?Absorbance of standard = 2.55 Absorbance of sample = 2.31
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2. asked by Lora
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Determine the concentration of the HCl in a swimming pool?given 100ml of a standard solution of Na2CO3 of concentration
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2. asked by kimberly
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Help with Beer's Law lab experiment question! So we were told to calculate the concentration of 5 standard solutions but I don't
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2. asked by Anonymous
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Which of the following is NOT true about the thermodynamic standard state?A. A pure liquid is in its standard state at 25C and a
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2. asked by jeff
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Which of the following is NOT true about the thermodynamic standard state?A. A solid is in its standard state when the
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2. asked by Anonymous
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If you run an unknown sample and it is darker than your highest standard on your standard curve, what do you report as the
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2. asked by Dreamland11
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Which of the following is NOT true about the thermodynamic standard state?A. A gas is in its standard state when its pressure is
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2. asked by Anonymous
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Which of the following is NOT true about the thermodynamic standard state?A. A gas is in its standard state when its pressure is
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2. asked by jina
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