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Ritonavir, with trade name Norvir (Abbott Laboratories), is an antiretroviral drug from the protease inhibitor class used to treat HIV infection and AIDS. Its structure is composed of 61.637% C, 6.724% H, 11.660% N, 11.097% O and the remainder is sulfur (S). Determine the empirical formula for NorvirTM and its molecular formula given that its molar mass is 720.946 g/mol.
Problem- In a fisher esterification cimmanic acid, anhydrous ethyl alcohol, one drop of sulfuric acid, and a black boiling stone are put in a flask. Two distillation heads with steel wool are attached to the flask. The solution undergoes a one hou..
The flask was then shaken until the solution was uniform. A 60.0 mL sample of this glucose solution was diluted to 0.500 L. How many grams of glucose are in 100. mL of the final solution?
Calculate the following values at 25C using standard potentials as needed. E°cell, E cell, deltaG°rxn, and deltaGrxn
a helium-filled weather balloon has a volume of 815 l at 22 oc and 752 mmhg. it is released and rises to an altitude of
A 1.00 L solution saturated at 25 degrees Celsius with calcium oxalate CaC2O4 contains 0.0061 g of CaC2O4. Compute the solubility-product constant for this salt at 25 degrees Celsius. Ksp =
Calculate the molar mass (g/mol) of the element to three significant figures.
Choose one of the oxidative protection enzymes, other than superoxide dismutase. Describe the metal containing active site, the general structure of the protein and the specific chemistry it catalyzes.
a typical diver inhales 0.500 l of air per breath and carries a 20 l breathing tank containing air at a pressure of 300
A sample of seawater consists of water, sodium ions, chloride ions, and several other dissolved salts. These ions and salts are evenly distributed throughout the water. Which term or terms could be used to describe this sample of seawater?
Calculate the change in internal energy of the following system: a balloon is cooled by removing 0.654 kJ of heat. It shrinks on cooling, and the atmosphere does 385 J of work on the balloon.
The weight of your 1285-kg car is supported equally by its four tires, each inflated to a gauge pressure of 36.0 lb/in2. What is the area of contact each tire makes with the road?
Sodium reacts with chlorine gas according to the reaction: What volume of gas, measured at 686 and 32 , is required to form 23 of.
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