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A buffer solution contains .11 mol of acetic acid and .14 mol of sodium acetate in 1.00 L what is the pH of the buffer after adding 3*10^-2 mol of KOH
How many moles of oxygen are needed for the complete combustion of 9.88* 10^21 molecules of hexane?
A certain substance has a heat of vaporization of 64.56 kJ/mol. At what Kelvin temperature will the vapor pressure
Consider a perfect gas contained in a cylinder and separated by a frictionless adiabatic piston into two sections A and B. All changes in B are isothermal. There is 2 mol of the gas in each section. Initially temperatures in both sections are 3..
The reactant concentration in a zero-order reaction was 9.00×10^-2 M after 100s and 2.50×10^-2 M after 390s . What is the rate constant for this reaction
Do you think you can calculate the % of ethanol in the distillate by comparing an average boilling point of the 5 ml portion which comprise the distillate
bynbsp solving this problemnbsp student cannbsp find limiting as well as excess reactant and also amount of product
At equilibrium the vessel is found to contain 0.566 g of H2. Calculate the equilibrium concentrations of H2, Br2, and HBr and Calculate Kc.
The enthalpy of combustion of n-Butanol, and the enthalpies of formation of CO2(g) and H2O(l), are shown below. Use the information given to calculate the enthalpy of formation of n-Butanol
a patient needs to take 625 of ibuprofen twice daily. the pills in the bottle are each 250. . how many pills does the
calculate the amount of heat required to completely sublime 51.0 g of solid dry ice co2 at its sublimation temperature.
What are the values of (i) the pressure, (ii) the molar fraction of benzene in the liquid phase, and (iii) the molar fraction of benzene in the vapor phase when 1/4 the initial vapor phase has condensed
A 0.1225-g sample of solid magnesium is burned in a bomb calorimeter that has a heat capacity of 1769 J/° C. The calorimeter contains exactly 261 g of water, and the temperature increases by 1.126°C. Calculate the heat given off by the burning Mg,..
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