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Calculate ?G° for the reaction of ammonia with fluorine. 2NH3(g) + 5F2(g) ? N2F4(g) + 6HF(g) Substance: NH3(g) F2(g) N2F4(g) HF(g) ?G° f (kJ/mol): -16.4 0 79.9 -275.4 cHOICES -179.1 kJ 1539.7 kJ -1539.7 kJ None of these choices is correct.
If the caffeine concentration in a particular brand of soda is 3.35 mg/oz, drinking how many cans of soda would be lethal?
Compare the energy of a photon of wavelength 3.4 um with that of wavelength 0.155 nm. answer is in E1/E2
sulfuric acid acts as a catalyst for making esters. Write an equation showing the production of Isoamyl alcohol
Write a balanced SN1 chemical equation between each alkyl halide and the best nucleophile in solution.
A solution consists of 3.88 g benzene,C6H6 , and 2.45 g toluene ,C6H5CH3. The vapor pressure of pure benzene at 20. °C is 75 mm Hg and that of toluene at 20.0 °C is 22 mm Hg.
An airplane is pressurized to 650 mmHg, which is the atmospheric pressure at a ski resort at 13000 ft altitude: a) if air is 21% oxygen, what is the partial pressure of oxygen on the plan
What is the expected molar solubility of silver phosphate, Ag3PO4 in water? B) What is the expected molar solubility, in ppt (parts per thousand), of lead(II) iodide, PbI2 in water
What is the Kb of C5H5N? The pH is 10.82 and the amount of C5N5N is 1.0X10^-3
Integrate the expression b = 1/V (derivative of V / derivative of T) at constant pressure, assuming that b is independent of temperature. By doing so, obtain an expression for V as a function of T and b at constant P. b means beta
calculate the ph that results when 100 mL a liquot of 0.0500 M is added to 400 M of a NH3/NH4+ buffer that is 0.200 M in NH3 and 0.300 M in NH4Cl
Qualitatively, describe how an acid-base indicator works. Why do we want to use a minimum amount of indicator in a titration? Select all that apply.
What volume will nitrogen gas occupy if the pressure is increased to 894 torr at constant temperature?
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