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Thyroxine is synthesized produced by the thyroid gland. Because of the kinds of atoms that represent in a thyroxine molecule, explain why iodide ion (as KI) is required in the diet.
A .sodium iodate and calcium nitrate B. sodium nitrate and potassium hydroxide C. sodium iodate and iron (III) chloride D. sodium iodate and potassium hydroxide.
Hemoglobin, the red blood protein responsible for oxygen transport, binds about 1.34cm^3 of oxygen per gram. Normal blood has a hemoglobin concentration of 150 g dm^-3. Hemoglobin in the lungs is about 97 per cent saturated with oxygen
adipic acid and citric acid have very similar melting points. given two unknown samples one being citric acid and the
When another cell is composed of a Ag(aq) 1.0 molL-1 Ag(s) half-cell and a Zn2+ (aq 1.0 molL-1)/ An (s) half-cell, the cell emf is measured to be 1.56 V, and the Zn2+ (aq)/Zn(s) half-cell is the anode. What is the reduction potential of the Zn2+ (..
What would be the ppm conc'n of 4.76 µg of NaCl in 350 ml of solution. What would be the ppm conc'n of sodium in the foregoing question.
A compound's 13C NMR spectrum shows a resonance at 176 and 85 ppm. What possible structural subunit does the compound contain
A 9.41g sample of HgCl2 is dissolved in 32.75g ethanol (C2H6O). The boiling point is elevated to 80.58 C. Is mercury (II) chloride an electrolyte in ethanol
Calculate the molarity of the solution produced by mixing the following substances. (Assume that the volumes are additive.) (a) 40.0 mL of 0.160 M NaCl and 65.0 mL of 0.133 M NaCl
A solution that is made by combining 125mL of 0.050 M hydrofluoric acid with 50.0mL of 0.10 M sodium fluoride.
If 14.70ml EDTA is required to titrate the 50ml sample, what is hardness of ground water, and molarity in ppm of CaCO3 by mass?
When HCl is added to 1,3-butadiene either 3-chloro-1-butene or 1-chloro-2-butene forms. Which product is more stable? Explain. b) Explain why at low temperatures, e.g. -80oC, when HCl is added to 1,3-butadiene the major product is 3-chloro-1-but..
Will there be any precipitate in the following situations? If so, then what compound will be the precipitate? Justify your answers. A) 23 micrograms of strontium chloride, SrCl2 is dissolved in 1.50L of 0.0088M ammonium fluoride, NH4F solution
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