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1. Using the pH measurements, classify your substances as acids, bases or neutral; strong or weak.
2. What is a buffer?
3. What are the buffer components in part VI of your experiment? te the expected pH value and compare to the values observed in your graphs.
4. How do buffers work? Give at least 2 examples of buffer systems that uses outside of the laboratory.
For N2 1- draw the molecular orbital energy diagram showing electrons 2- give the molecular electron configuration 3- give the bond order for the molecule 4- predict if the molecule will be magnetic
the reactant concentration in a zero-order reaction was 7.00times10-2 after 180 and 3.00times10-2 after 340 . what was
Calculate its molar heat capacity at constant pressure at 500 K.
If a molecule having an ionization energy of 10.51 eV produces a photoelectron having a kinetic energy of 7.01676E-19 J, what is the wavelength of the incident radiation?
Explain how this rectifier works. That is, show that when the semiconductors are connected to the terminals in an AC outlet, half the time a large flow of charge occurs and half the time essentially no charge flows across the p-n junction
1. The sulfur dioxide present in air is responsible for the "acid rain" phenomenon. One can calculate its concentration by titrating against a standard permanganate solution as follows:
When carbon is burned in air, it reacts with oxygen to form carbon dioxide. When 24.0 of carbon were burned in the presence of 75.4 of oxygen, 11.4 of oxygen remained unreacted. What mass of carbon dioxide was produced
The isotope 22Na has a half life of 2.60 years. How much of a 1.00 gram sample would be left after 1.00 yr
When heated to 350 °Cat 0.950 atm, ammonium nitrate decomposes to produce nitrogen, water, and oxygen gases:
Problem- Draw the Lewis structure of H2O. Include any nonbonding electron pairs. Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all lone pairs of electrons.
The reaction 4PH3(g) -> P4(g) + 6H2(g) is found to be first order in PH3 with a rate constant of 1.6*10^-2 sec^-1 at 650 C. a)Give the rate law (rate equation) for the reaction and explicitly state how the reaction rate in this case would be defin..
saccharin one of the first non-nutritive sweeteners used in soft-drinks is 500 times sweeter than sugar in dilute
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