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A patient is given a 58.0-mg dose of Iodine-131 to image the thyroid. This nuclide has half life = 8.0 days. What mass of the nuclide remains in the patient after 33.0 hours, when the thyroid scan is taken?
A polyamide was prepared by bulk polymerization of hexamethylene diamine (9.22 g) with adipic acid (11.68 g) at 280 degrees C. Analysis of the whole reaction product showed that it contained 2.6 x 10-3 mol of carboxylic acid groups.
corrosion technologist pipetted a 100.00 mL hard water sample and titrated it with 37.64 mL of 0.01 M EDTA solution for a total hardness endpoint
Water in an enclosed vessel at 17°C contains a concentration of dissolved oxygen of 6 mg/L. At equilibrium, determine the concentration of oxygen in the space above the water in molal fraction. and the total pressure in the vessel. Henry's law con..
A petroleum refining facility located in a suburban, but relatively populated, area converts crude oil derived from subsurface deposits into various fuels (e.g., gasoline, kerosene, heating oil, diesel) and organic solvents
Use standard enthalpies of formation to determine Horxn for: 3NO2(g) + H2O(l) ? 2HNO3(aq) + NO(g) Enter in kJ. -133.5 Find the change in internal energy for this reaction.
What speed would an O2 molecule have if it had the same momentum as a photon of 700 nm wavelength
What is the boiling point of the automobile radiator fluid prepared by mixing 1.00 L of ethylene glycol (HOCH2CH2OH, density - 1.114 g/mL) with 1.16 L of water (density = 1.000 g/mL)?
since methylene chloride and water to not mix by wetting a piece of filter paper with water addition of both layers to
The equilibrium constant, Kp, for the following reaction is 0.497 at 500 K: PCl5(g) PCl3(g) + Cl2(g) Calculate the equilibrium partial pressures of all species when PCl5(g)
How much free energy is made available by the pH gradient and membrane potential for the transport of protons INTO the cell?
Octane or C8H18 (l) is a component of gasoline. If 35.0 mol O2 (g) in the air is used to burn a sample of octane completely. How many grams of carbon dioxide gas are produced
Which of the following would be expected to have the lowest freezing temperature?
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