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Calculate the standard reaction enthalpy for the oxidation of nitric acid to nitrogen dioxide, 2NO(g) + O2(g) ----> 2NO2(g) from the standard reaction enthalpies of: N2(g) + O2 ------> 2NO(g) DH = +180.5 kJ x mol-1 2NO2 (g) --------> N2(g) + 2O2(g) DH = -66.4 kJ x mol-1
A fluorinated organic gas in a cylinder is com- pressed from an initial volume of 960 mL at 158 Pa to 478 mL at the same temperature. What is the final pressure? Answer in units of Pa.
The standard potential of the Cell Pt|H2|HBr|AgBr|Ag was found to be +0.07372 at 293 K and +0.06873 at 303 K. Evaluate the standard reaction Gibbs energy, enthalpy, and entropy
determine the net change of oxidation number of each of the elements in the redox equations.
A 303- sample of unknown solution reacts completely with to form 14.1 . What was the concentration of the solution?
How does the strength of the attration between water molecules and sodium and chloride ions compare with the strength of the attraction between the sodium ions and chloride ions?
Ribonuclease P proteins RPP21 and RPP29 bind one another during complex assembly. Thermodynamic measurements reveal that ΔH° = -66.3 kJ/mol and ΔS° = -73.2 J/mole*K at 40°C. What is the equilibrium constant for the binding reaction at 40°C?
A solution is prepared by dissolving 0.18 moles of acetic acid and 0.18 moles of ammonium chloride in enough water to make 1.0 L of solution. Find the concentration of ammonia in the solution.
A student is asked to determine the formula of a hydrate of colbalt (II) chloride. The mass of the empty clean, dry crucible and cover, after heating is 22.446 g. A sample of 0.324 g of cobalt chloride is added to the crucible.
A voltaic cell is constructed by immersing a strip of silver in a 1.0M AgNO3 solution and a strip of cadmiun metal in a 1.0M Cd(NO3)2 solution. The circuit is completed by a wire and a salt bridge in the usual way. What is the cell potential for t..
If a solution is made from 100 g of pentane and 100 g of hexane, what will be the mole fraction of pentane in the gas phase over that solution (if only hexane and pentane vapor are present)? Assume no deviation from Raoult's law
what do the bond angles of boron trifluoride suggest about the hybridization state of the boron atom of water
Using bond enthalpies, estimate the heat of the gas phase reaction of methane with bromine to form methyl bromide and hydrogen bromide.
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