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A chemical process requires 8.700 g-mol of calcium sulfate (CaSO4) for a reaction. How many grams are in 8.700 g-mol of calium sulfate
Calculate the work associated with the expansion of a gas from 152.0 L to 189.0 L at a constant pressure of 11.0 atm.
Explain how the creation of coal, graphite, diamond and - buckminsterfullerene permits the required bonds to form. If you could answer in 100 - 150 words paragraph, I would highly appreciate it. If you could include references. Thanks.
Hexafluorosilicic acid is made by the reaction of silica and hydrofluoric acid by the following reaction 6HF + SiO2 ? H2SiF6 + 2H2O ?Hr = -670 kJ/mol
Identify the atom whose electron configuration is [Ar]3d74s2. Write the one or two letter symbol for the element. How many unpaired electrons are there in the ground state of this atom
From the values of delta H and delta S, predict which of the following reactions would be spontaneous at 25*C:
The pH of rainwater in a polluted area was found to be 3.50. What is the H+ concentration
It then gives off a photon having a wavelength of 1740 nm. What is the final state of the hydrogen atom? Values for physical constants can be found here.
If you combine equal volumes of the following solutions, which combinations will result in the desired buffer? Why are the answers are 0.20 M CH3CO2H + 0.10 M NaOH and 0.20 M Na(CH3CO2) + 0.10 M HCl
Nitrogen dioxide (NO2) cannot be obtained in a pure form in the gas phase because it exists as a mixture of NO2 and N2O4. At 25°C and 0.98 atm, the density of this gas mixture is 2.7 g/L.
why do we need to excess FCR? Also give 3 reasons why gallic acid is used as standard for the total phenolic assay?
What is the overall order of the reaction?
A brand new amino acid was recently discovered "calline" it is 3 ionizable groups with pka values of 2.3, 4.7
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