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Use standard heats of formation (delta H^o) and standard entropies (delta S^o) to calculate (delta G^o) for the following reaction at 25 degrees Celsius. Which type of reaction does it fall under? Is it spontaneous? Does it have a temperature it would turn nonspontaneous? H2(g) + N2(g) ----------->NH3(g)
What is the molar mass of cholesterol if 0.00105 mol has a mass of 0.106g
quantitative analysis of cl- ion is often performed by a titration with silver nitrate using sodium chromate as an
a photon of wavelength 40.0nm is used to eject an electron with the energy 22.3eV from a molecule.calculate the ionization energy of the molecule and tha associated wavelength of the elctron..
Explain the pH of a solution made by adding 8.80 grams of ammonium chloride to 450mL of 0.105M sodium hydroxide. No change in volume takes place
methanol is produced commercially by the catalyzed reaction of carbon monoxide and hydrogencog 2 h2g ch3ohgan
Calculate the wavelength of light (nm) emitted in the n= 3 --> 2 spectral transition in the hydrogen atom
The reaction A---> B is 4th order in the reactant A. derive an expression for the concentration of the reactant as a function of time [A]t
How much heat is required to melt 15 grams of ice at 0C? How much heat is released when 100 grams of steam condenses at 100C? If a system of ice and water has a mass of 12 grams
cu/cu^2+ concentration cell has voltage of .21V at 25 c. the concentration of cu^2+ in one of the other half cell is 1.4E-3M. What is the concentration of{Cu^2 + in the other half-cell
Determine the number of valence electrons in each of the following elements. Ta Fe Cs
Ethylene glycol is used as automobile antifreeze. 6.38g og this compound contains 2.47g of carbon and 0.620g of hydrogen. The rest is oxygen. The molar mass is 62.0g/mole.
A geothermal system is initially more expensive to set up than a conventional heating and cooling system but the annual operating cost are much cheaper
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