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A patient's thyroid gland is to be exposed to an average of 5.5 microcuries for 16 days as an ingested sample of iodine-131 decays. If the energy of the beta radiation is 9.7 x 10^-14 J and the mass of the thyroid is 32.0 g, what is the dose recieved by the patient in rads?
calculate the pH of a 1.06 x 10^-2 M solution of decongestant ephedrine hydrochloride if the pKb of its conjugate bas is 3.86
What is the pKa for the acid HA if a solution of 0.65 M HA and 0.85 M NaA has a pH of 4.75?
Glycine is the simplest of the amino acids. Treat the amine and carboxylic acid groups as functional groups as independent functional groups.
2 Al (OH) 3 + 3 H2 SO4 = Al2 (SO4)3 + 6 H2O How many grams of Al2 (SO4)3 are generated when 152 g of H2SO4 reacts
A thin plate of copper is suspended in seawater. If the corrosion rate is 0.9 mpy (mils per year) and the plate is a square of dimension 3.5 in. per side, how much weight loss (in mg) is expected in 16 days. Express your answer in the form X.X, ro..
Equal molar quantities of two gases, O2 and H2O, are confined in a closed vessel at constant temperature. Which gas, if any, has the greater partial presure
Researchers analyzing an unknown hydrocarbon with chemical formula CxHy found that 225 grams of O2(g) were required for complete combustion of 1.0 mol CxHy, to form CO2(g) and H2O(g) only. Unfortunately, a faulty valve between the furnace and abso..
what is the difference between a 10% (v/v) methanol (CH3OH) solution and a 10%(m/m) methanol solution
An aqueous solution that contains 285ppm of potassium nitrate (KNO3) is being used to feed plants in a garden. What volume of this solution is needed to prepare 1.7 L of a solution that is 97 ppm in KNO3?
Carvone is the major constituent of spearment oil. What products would you expect from reaction of carvone with the following reagents?
If 435 grams of water at 23 celcius abssorbs 281 kJ of heat froma mountain climber's stove at an elevation where the boiling point of water is 87 celcius
A galvanic cell is formed by connecting an iron (III)/ iron metal electrode to a zinc (II)/ zinc metal electrode through a suitable salt bridge.
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