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At 298, 1 atm, the heat produced by the reaction of 4.00mol of NO with molecular oxygen heats 1.07L liquid water from 298k to 348k. Calculate enthalpy for the reaction 2NO + O2 -> NO2, at 298k. Assume constant pressure and no heat lost.
What causes cycloalkanes to have two less hydrogen atoms than similar alkanes that are open chain ones?
the sodium acetate play in the synthesis of the amide functional group of phenacetin?
Sodium formate, HCOONa, is a weak base and undergoes hydrolysis in water. Determine the OH- concentration at equilibrium in a solution
A 20.0 ml sample of 0.200 M Hbr solution is titrated with 0.200M of NaOH solution. Calculate the pH after 16 ml of NaOH has been added.
An organic compound was prepared and purified by chromatography. A conductivity measurement showed the compound to be a nonelectrolyte. Elemental analysis gave an empirical formula of CH3O.
What is the ratio of the rate constants for this reaction when the temperature is decreased from °C to °C?
The first ionization energy of bismuth is Ei1 = +703 . What is the longest possible wavelength of light that could ionize an atom of bismuth?
water to give a solution that has a vapor pressure of 37.2 torr at 35 °C? Assume complete dissociation of the solute and ideal solution behavior
What is the final temperature in a squeezed cold pack that contains 40.0 g of NH4NO3 dissolved in 135 mL of water? Assume a specific heat of 4.18 J/(g·°C) for the solution, an initial temperature of 25.0°C, and no heat transfer between the cold pa..
If aluminum is diffused into a thick slice of silicon with no previous aluminum in it at a temperature of 1100?C for 8 hours, what is the depth below the surface at which the concentration is 1016 atoms/cm3 if the surface concentration is maintain..
500cm3 of 0.250M of Na2SO4 is added to an aqueous solution of 15.0g of BaCl2 resulting in a white precipitate of insoluble BaSO4.
514 mL of sulfuric acid is exactly neutralized with 453 mL 0.180 M lithium hydroxide solution. What is the concentration of the acid solution?
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