How many times faster will the reaction occur
Assume that the activation energy for a certain reaction is 173 kJ/mol and the reaction is started with equal initial concentrations of reactants. How many times faster will the reaction occur at 40 degrees Celsius than at 10 degrees Celsius?
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Calculate the pH at the equivalence point for the titration of 0.20 M aniline (C6H5NH2, Kb = 3.8 x 10-10) with 0.20 M HCl. [Hint: remember the dilution factor caused by addition of titrant to the aniline solution.]
The molar heat capacity of ethane is represented in the temperature range 298 K to 400 K by the empirical expression Cp,m/(J K^-1 mol^-1)= 14.73 + 0.1272 (T/K).
Initially a mixture contains 0.760 mol each of N2 and O2 in an 8.26-L vessel. Find the composition of the mixture when equilibrium is reached at 3900°C. For the reaction below, the Kc = 0.0123 at 3900°C.
Carbonyl sulfide (COS) is a trace component in the atmosphere. One difficulty in studying chemical reactions of this molecule is that it spontaneously decomposes into carbon dioxide (CO2) and carbon disulfide (CS2) by the process.
When rubidium metal is exposed to air, one Rb atom is combined with two oxygen atoms. If 1.75g of Rb is exposed to air, what is the mass of the product in grams?
The temperature of a household refrigerator is maintained at 0C and the temperature of the room at 25C. The heat leaking into the refrigerator from the warm room is 8*10^6 J every 24 hours, enough to melt 50lb of ice in 50 hours.
Approximately 80% of the mass of a human body consists of aqueoussolutions (spinal fluid, blood, etc.) These solutions areunsaturated salt solutions that are 0.21 M NaCl and have a densityof 1 g/mL. How many pounds of salt are present in an 180 lb
A solution is made by dissolving 6.10 g of K2SO4 in 700 mL of water. The freezing point of this solution is -0.24 °C. What is the van't Hoff factor for K2SO4 at this concentration?
How much energy in kilojoules is released when 15.3 g of steam at 115.0 degree C is condensed to give liquid water at 750.0 degree C?
Calculate the molar amounts of the overhead and bottoms products, the mole fraction of benzene in the bottoms product, and the percentage recovery of toluene in the bottoms product.
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