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Problem- Dichloroacetic acid is a weak acid. A 0.100 M solution of this acid has [H3O+]= 0.0070 M. What is the Ka for Cl2HCCOOH?Cl2HCCOOH + H2O <----> H3O+ + Cl2HCCOO-
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Solution A contains 29.541 millimoles of 0.09847 M of acetic acid (HOAc) and 34.51 millimoles of 1.0 M of sodium acetate (NaOAc). Solution B is made by 10 mL of Solution A + 90 mL of boiled water.
Many fish which normally line in mountain streams (where the water temperature is 0 degrees celcius) die when water in which they live warms up to 25 degrees C. How many oxygen molecules are there in 1.0 ml of water at these two temperatures?
The temperature dependence of the vapor pressure is given by the equation: Ln p = Ln A - deltaH(vapor)/RT. Where p = pressure, T = temperature, A = pre-exponential constant, and delta h (vapor) is the enthalpy of vaporization. Solve for vapor pres..
Write a net ionic equation for the precipitation reaction resulting from mixing a BaCl2 solution with a K2SO4 solution.
The temperature of the entire system rose from 25.30 °C to 26.59 °C. Calculate the heat of reaction, in kJ, per mole of KOH(aq).
Write structural formulas for all of the possible isomers of -pentyne that can be formed by moving the position of the triple bond
A copper concentration cell has 0.5 M Cu 2+ at one electrode and 1.5 M Cu 2+ at the other electrode. Explain which electrode is the negative electrode in this galvanic cell and why.
Find the velocity of an electron emitted by a metal whose threshold frequency is 2.32×1014 when it is exposed to visible light of wavelength 5.10×10?7
Calculate the partial pressure of each gas and the total pressure if the temperature of the gas is 17?C.
Proceeds at a certain temperature until the partial pressures of H2O, H2, and O2 reach 0.065 atm, 0.0070 atm, and 0.0040 atm respectively. What is the value of the equilibrium constant at this temperature
The solubility of barium carbonate,BaCO3, is .0100 g/L . Its molar mass is 197.6 . What is the Ksp of barium carbonate?
How much energy in kilojoules is required to convert 100 mL of diethyl ether at its boiling point from liquid to vapor if its density is 0.7138 g/mL.
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