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A 1.95 g sample of potassium bicarbonate is decomposed by heating. If the resulting potassium carbonate weighs 1.54 g and the calculated yield is 1.35 g, what is the percent yield?
Explain the following observations. 1. Aziridines, compounds that contain nitrogen in a three-membered ring, undergo pyramidal inversion much more slowly than do other alkylamines
Calculate Delta mixG, Delta mixS, and Delta mixH for mixing 150.0 g of benzene with 200.0 g of toluene at 20 degree C and 1 atm.
compressed reversibly and adiabatically until the temperature reaches 250K. Given that its molar constant-volume heat capacity is 27.5J/Kmol, calculate final pressure and final volume.
Explain and calculate the mass of solution in a pipette if the following data has been recorded during a lab experiment
A sample of white gold is 18.0 grams gold, 3.0 grams silver, 2.0 grams cobalt, and 1.0 gram platinum by mass. What is the percent of platinum in the sample
Magnesite MgCO3 and siderite FeCO3 are the Mg and Fe end-members of the magnesite-siderite solid solution.
Calculate the molar concentration of OH- ions in a 0.560 M solution of hypobromite ion (BrO-; Kb = 4.0 x 10^-6). What is the OH- and PH
Suppose one wated to take another approach where C is heated until 5% of the atoms occupy the electronically excited state. Consedering only the lowest-energy ground state and the elctronically excited state
A gas was enclosed in a rigid-walled container. The initial temperature and pressure were 52°C and 0.55 atm, respectively. If the final pressure were 2.41 atm.
This energy is called the work function of that metal. What is the longest wavelength of radiation (in nm) that could cause the photoelectric effect in each of the following metals
A gas held at 798 mmHg in a 400 mL flask is released into a 3 L flask.Whats the new gas pressure?
A vitamin C containin sample was titrated to the blue colored endpoint with 19 ml of 0.12 M iodine solution. How many grams of Vitamin C were in the sample
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