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A 0.2 M sodium chlorobenzoate (NaC7H4ClO2) solutions has a pH of 8.65. Calculate the pH of a 0.20 M cholorbenzoic acid (HC7H4ClO2) solution.
What are the reactions happen at the negative limit. Why is the negative limit in a given medium always more positive for platinum than it is for glassy carbon
a gas mixture composed of helium and argon has a density of 0.727gl at a 755mmhg and 298k .what is the composition of
Draw the product of the following reaction between propanoyl chloride and p-methoxynitrobenzene. Include all formal charges.
State what these are, how they are made, and one way they can be used productively in research and one way they can be used in medical diagnostics.
When sodium is heated, a yellow spectral line whose energy is 3.37x10^19 J/photon is produced. What is the frequency and wavelength of this light?
All the CO2 that enter waterbody is converted to CH2O. How much oxygen (moles/m^2) is required to oxidize it back to CO2?
What is the absolute pressure in a lake 90.00 meters under water (? = 1.00 g/mL) when the atmospheric pressure is 101.325 kPa?
A solution containing sulfide ions is added to selectively precipitate one of the metal ions from solution. At what concentration of sulfide ion will a precipitate begin to form? What is the identity of the precipitate?
calculate the theoretical mass of ca2 ion in one tablet in grams if there is 750 mg caco3 and 320mg calcium per tablet.
b) Calculate Delta G^o at 800 K, assuming that Delta H^o and Delta S^o do not change with temperature. (c) Is the reaction spontaneous at 800K?
The half-life of a certain radioactive element is 1250 years. What percent of the atoms remain after 7500 years?
A fossil that formed with 10,000 atoms of a radioactive parent element now contains only 1,250 atoms of that element. If the half-life of the element was 1,000,000 y, how old is the fossil
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