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The ionization energy for sodium is 496 kJ/mol. The electron affinity for chlorine is -349 kJ/mol. Use these values and Hess's law to calculate the enthalpy for the following reaction: Na(g)+Cl(g) -> Na+(g) + Cl-(g)
What would be the expected CNMR, HNMR, and IR spectra for lidocaine, 2,6-dimethylaniline, and alpha-chloro-2,6-dimethylaniline?
acetylene gas undergoes combustion to produce carbon dioxide and water vapor. if 75.0 l of co2 are produced how many
Oxygen gas reacts with powdered aluminum according to the following reaction: 4Al(s) + 3O2 (g) = 2Al2O3(s). How many liters of O2 gas, measured at 779 mm Hg and 30 C, are required to completely react with 2.5 mol of Al?
What is the fraction of association for the following potassium propionate solutions. The Ka of propanoic acid is 1.34 × 10-5.
An archeologist finds a huge monolith in the desert. In order to estimate the weight of this object; he estimates the dimensions of the monolith and removes some chips from the rock with his hammer.
170 ml of an hcl solution with ph of 2.30 is added to 200 ml of an hno3 solution. the resulting ph is 1.40. what was
When one mole of hydrogen decomposes into H atom the change in enthalpy is 435. 88 kJ/mole. What is the formation enthalpy, ?Hf for hydrogen atom
On a Particular summer day, the temperature is 30.0 degrees Celsius and the relative humidity is 80.0% ( which means that the partial pressure of water vapor in the ambient air is 80.0%
A mammoth skeleton has a carbon-14 decay rate of 0.46 disintegratioins per minute per gram of carbon (0.46 dis/min*g C)
calculate the concentration of all soluble Hg(II) species. Which Hg(II) species is most prevalent? Assume there are no solids present, that the major ligands present are Cl- and OH-, and ignore activity corrections.
a)A 10.0 g sample of a mixture of methane (CH4) and ethane (C2H4) reacts with oxygen at 25C and 1 atm to produce carbon dioxide and water (liquid). If the reaction produces 520 kJ of heat, what is the mass percentage of methane in the mixture?
Which of the following compounds exhibits the pattern of m/z values shown below? 41, 43, 57, 87, 101, 116 a. propylbromide b. sec-butyl isopropyl ether c. isopropyl bromide d. 2-hexanol e. 2-butanone
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