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Problem- Calculate the pH of the solution made by adding 0.50mol of propanoic acid, (C2H5COOH or HC3H5O2) and 0.30 mol of sodium propanoate (C2H5COONa or NaC3H5CO2) to 1.00 L of water. The value of Ka for C2H5COOH is 1.3×10?5.
Write your solution in appropriate format and provide references
If a random sample of this element collected from the tail of a comet has an weighted average atomic mass of 10.788 amu, what is the percent abundance of the lower-mass isotope?
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You begin an experiment with 0.20 M reactant A and 0.40 M reactant B. After the reaction has been allowed to achieve equilibrium, you have 0.10 M product C. What molarity of A do you have remaining at equilibrium
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use standard reduction potentials shown below to calculate the potential of a nickel-cadmium cell that uses a basic
What is the final temperature in a squeezed cold pack that contains 40.0 g of NH4NO3 dissolved in 135 mL of water? Assume a specific heat of 4.18 J/(g·°C) for the solution, an initial temperature of 25.0°C, and no heat transfer between the cold pa..
If you used 8,400 kilojoules you expend in energy in one day to heat 49,000 grams of water at 18 degrees celcius, What would be the rise in temp?, and What would be the new temp of the water?
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