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The standard enthalpy of atomization of an element is the energy required to convert one mole of an element in its most stable form at 25 Celsius to one mole of monoatomic gas. Given that the standard enthalpy of atomization for sodium is 108.4 KJ/mol, calculate the energy in kilojoules required to convert 1.40 mol of sodium metal at 25 celsius to 1.4 mol of gaseous Na+ ions. (Ionization energy of Na(g) is 495.9 KJ/mol)
Glucose oxidation has a standard enthalpy of -2803 kJ/mol. What is the total heat produced by human respiration over
An excited hydrogen atom emits a photon with a frequency of 1.141 x 10^14 Hz to reach the n = 4 state. From what state did the electron
what volume of Cl2 gas will be in a balloon after a 3.95 L sample at ATP is put into an oven set for 70.0 C
The Kal of this aid is 1.0 x 10^-10 and Ka2 is 1.0 x 10^-10. Calculate the concentration of A2- in this solution.
At a certain temperature, reaction has equilibrium constant (Kc) of 1.9 x10^19. Determine the equlibrium constant for the reaction based on this information at the same temperature.
If the initial surface coverage is 8.9*10^16 molecules/cm^2, how long will it take for one-half of the film to evaporate? b. What fraction of the film is left after 10 s? Assume the same initial coverage as in part a.
Determine the value of the equilibrium constant at this temperature - Ammonium Hydrosulfide NH4HS yields NH3(Ammonia) and Hydrogen sulfide
Calculate E when 900.0 g of CH3OH(g) completely reacts at a constant temperature of 300 K and constant pressure of 0.95 atm. R = 8.314 J/mol*K and R = 0.08206 atm*L/mol*K
A 100 mL of a 0.100 M solution of vinegar (acetic acid, CH3COOH) is mixed with 100 mL of a 0.100 M baking soda (sodium bicarbonate) solution and a reaction proceeds that generates carbon dioxide, water and sodium acetate.
write the most stable lewis structure for C2F4 and state the hybridization of the carbon atom
A rubber balloon was inflated with helium gas and floated in the air. The next day, the balloon was somewhat smaller and no longer floated.
Calculate the percent composition of copper in the hydrate CuSO4.5H2O based on atomic weight data.
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