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Estimate the equilibrium constant for the weak base C6H5CH2NH2, if a 4.53×10-1 M aqueous solution of C6H5CH2NH2 has a pOH 4.84 (make an exact calculation assuming that initial concentration is not equal to the equilibrium concentration). C6H5CH2NH2 + H2O = C6H5CH2NH3+ + OH-
a solution of 8.32g of paba in 150g of chloroform boiled at 62.62C. what is the molecular mass of paba?
a 100.-L flask contains a mixture of methane, CH4, and argon at 25°C. The mass of argon present is 228 g and the mole fraction of methane in the mixture is 0.650. calculate the total kinetic energy of the gaseous mixture.
Octane has a density of 0.692g/mL at 20 ^ C. How many grams of O2 are required to burn 1.10gal of C8H18.
Determine what would be the total ?nal pressure of the system in atmospheres If we completely hydrolyzed 0.18 kg of H2O in a 8.2 L container at 300 K?
Draw and name the molecule which contains only carbon and hydrgen atoms only three of which are carbon
Find the rate of the reaction - What is the rate of the reaction?
What mass of water can be heated from 22?C to 100 ? C by burning this piece of coal? Answer in units of g
Calcultate what is the value of enthalpy H reaction If the temperature increased from 35.0 degree celsius to 76 degree celsius and the heat capacity of the calorimeter = 23.3kj/c ? (the molar mass of C2H5OH = 46.07g/mol. )
HClO is a weak acid (Ka = 4.0 × 10-8) and so the salt NaClO acts as a weak base.
What is the origin of the charge neutrality requirement in solids? Why must solids have charge neutrality in the bulk,
Assuming the pressure and temperature of the gas remain constant, calculate the number of moles of gas added to the container.
the fraction of the initial mass of gas remaining in the tank if carbon dioxide obeys the ideal gas and PR equations of state
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