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Nitrosyl bromide, NOBr, is formed in the reaction of nitric oxide, NO, with bromine,Br2 : 2NO(g)+Br(g)<---->2NOBr(g) The reaction rapidly establishes equilibrium when the reactants are mixed. At a certain temperature the concentration of was 0.400M and that of Br2 was 0.255M . At equilibrium the concentration of NOBr was found to be 0.250M . What is the value of Kc at this temperature?
What is the first step in the reaction sequence of these Aldol reactions under basic conditions?
A 21.10 g sample of liquid ethanol is initially at -36.90 oC. If the sample is heated at constant pressure (P = 1 atm.), how much kJ of energy are needed to raise the temperature of the sample to 100.60 oC.
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?
compute the enthalpy change, (Delta H), for this reaction per mole of A. suppose that the specific heat =[4.18J/(g*Degrees C) and density=1.00(g/mL)?
A helium-filled weather balloon has a volume of 815 L at 22 oC and 752 mmHg. It is released and rises to an altitude of 7.16 km, where the pressure is 364 mm Hg and the temperature is -25oC
Determine the molar mass of the nonelectrolyte if the osmotic pressure of the solution = 23.6 atm, also express your answerin g/mol?
A liquid that has a density of 0.80 ± 0.01 g/mL is insoluble in cyclohexane. What is the liquid?
milk is pasteurised when heated to 63 C for 30 minutes, but if it is heated to 74 C it takes only 15 seconds for the same result. Find the activation energy for this sterilisation process
How many grams of nickel metal are plated out when a constant current of 15.0 A is passed through aqueous NiCl2 for 80.0 minutes?
A 100.0 g copper sample (specific heat = 0.385 J/goC) at 100.0oC is added to 50.0 g water at 26.5oC. What is the final temperature of the copper-water mixture?
What mass of this substance must evaporate in order to freeze 160 g of water initially at 21 0C? (The heat of fusion of water is 334 {J/g}; the specific heat of water is 4.18 {J/g c.K}.)
How much heat in kilojoules is evolved in converting 1.50 mole of steam at 150 deg celsiys to ice at -35.0 deg. celsius? The heat capacity of steam is 1.84 J/g. deg celsius.
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