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A sample of gaseous SO3 was placed in a rigid 1.00L flask, where it decomposed at 600.00oC according to the following reaction:
SO3(g) <---> SO2(g) + 1/2O2(g)
At equilibrium the total pressure and density of the gaseous mixture were 1.80atm and 1.60g L-1, respectively. Calculate Kc and Kp.
Assuming the solution has a heat capacity of 4.18 J/°C·g and assuming no heat loss to the calorimeter, calculate the enthalpy change for the dissolution of NH4NO3 in units of kJ/mol.
Calculate the amount of energy in kilojoules needed to change 423g of water ice at -10 deg c to steam at 125 deg c . The following constants may be useful:
A 25.0 mL sample of a solution of the weak base aniline, C6H5NH2, requires 25.67 mL of 0.175 M HCl to reach the equivalence point. (Kb for aniline = 4.0 x 10-10)
What is the final temperature of the water and pieces of metal?
Determine what volume of .1 M HBr is required to neutralize 50 ml of .140 M Barium hydroxide and determine the normality of a solution consisting of 10.51 mg of NaOH in 591 mL of solution
What is the freezing point (°C) of a solution prepared by dissolving 11.3 g ofCa(NO3)2 (formula weight= 164 g/mol) in 115 g of water? Assume that i=3.00 for Ca(NO3)2 and the molal freezing point depression constant for water is1.86°C/m.
Commercially available concentrated sulfuric acid is 18M. calculate the volume of this acid that is required to prepare
Hexafluorosilicic acid is made by the reaction of silica and hydrofluoric acid by the following reaction 6HF + SiO2 ? H2SiF6 + 2H2O ?Hr = -670 kJ/mol
Mathematically determine which acid contributes a larger concentration of H3O+ ions into the solution, be sure to report the H3O+ concentrations for both, label them clearly, and identify which substance creates a larger concentration?
A cube of a gold with a volume of 59 cm3 has a mass of 980 g. The density of pure gold is 19.3 g/cm3. What is the percent error of the measured density?
Consider the combustion of ethane 2C2H6 + 7O2 yields 4CO2 + 6H2O If the ethane is burning at the rate of 0.1 mol/L*s, at what rates are CO2 and H2O being produced?
The operations manager of a large production plant would like to estimate the mean amount of time a worker takes to assemble a new electronic component. Assume that the standard deviation of this assembly time is 3.6 minutes.
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