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The determination of iron in industrial waste stream is often carried out by reacting the water sample with o-phenanthroline to form a red-orange complex that absorbs at 510 nm. Using the data shown in the following table construct the standard calibration curve and determine the concentration of Fe in the waste stream. The cuvette or cell dimension is 1.00 cm.
ppm Fe Absorbance0.0 0.0001.0 0.1832.0 0.3643.0 0.5464.0 0.7275.0 0.269
Find out the formula of the gas produced if Na 3 P(s) sodium phosphide, is reacted with H 2 O
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Multiple choice questions in nuclear chemistry - which equation represents the balanced nuclear equation
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Describe each reaction and provide the name of all the chemical formula involved for each number.
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A student analyzed and recorded two potassium emission spectra: 1) one using 0.10 M Potassium sulfate solution; 2) one using 0.10M Potassium nitrate solution;. Determine why will significant differences be observed in the two emission spectra.
calculate the difference in mass that is hold by a 500.0mL flask at a temperature of 0.0°C from that at temperature of 20.0 °C? (you can assume the volume of the sample at 0.0 °C temperature =volume of the sample at 20.0°C)
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