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A geochemist heats a sample of limestone (CaCo3) and collects the CO2 released in an evacuated flask attatched to a closed end manometer. After the system comes to room temp Change in heat = 291.4 mmHg. Calculate the CO2 pressure in torrs, atmosphere, and kilopascals.
a solution contains naphthalene c10h8 dissolved in hexane c6h14 at a concentration of 13.13 naphthalene by
need to dissolve CaCl2 in water to make a mixture that is 31.0% calcium chloride by mass. If the total mass of the mixture is 405.5 g, what masses of CaCl2 and water should be used?
Vowels are characterized by their formant locations and bandwidths. What spectral features vary across the vowel triangle?
state the radial wave function and radial distribution function of the 3s and 3p states of the hydrogen atom.plot
Of all the possible salts that can form from these cations and anions, only two are insoluble: zinc cyanide and barium sulfate.
The combustion of 0.0272 mole of a hydrocarbon produces 1.9609 g H2O and 3.5927 g CO2. What is the molar mass of the hydrocarbon
O2 gas is held over a container of water. If the total pressure of the gas mixture is 10.2 atm, what is the concentration of dissolved He in the water?
List three hazardous chemicals used in the synthesis of either the known or unknown compounds.
which one of the following cell combinations would best be used to set up a cell with a potential of 0.50v by
A concentration cell consists of two H2/H+ electrodes. Electrode A has H2 at 0.83 atm bubbling into 0.29 M HCl. Electrode B has H2 at 0.56 atm bubbling into 1.8 M HCl.
If the wavelength of the emission maximum from a small pinhole in an electrically heated container was determined at a series of temperatures as well as the results are given below. Deduce a value for Planck's constant.
Compound A, C8H10, absorbed 3 equivalents of H2 on catalytic hydrogenation over a Pd/C catalyst to give B (C8H16). On ozonolysis, compound A gave, among other things, a ketone which was identified as cyclopentanone.
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