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Pyridine with pyrazine has structures similar to benzene. Explain both compounds have structures with six atoms in a ring. Depict Lewis structures for pyridine and pyrazine showing all resonance forms. Define the N atoms in the pyridine are opposite each other in the ring with 2 carbons between them in either direction. Indicate resonance with a double headed arrow between the structures. Depict the Lewis structures with the formal charges minimized
Determine why would the P have been higher or lower if the H 2 O had been at pH 5?
What volume of each of the following solutions contains the indicated amount of dissolved solute? 1.) 4.50g solute in 0.475 M KNO3 2.) 4.50g solute in 0.475 M AlBr3
The imaginary nonmetal E has two isotopes 50E(isotopic mass 49.9715 u abundance 76.66%) 52E (isotopic mass 51.9663 u) Calculate the atomic mass of E as it would appear in the periodic table.
A certain laser uses a gas mixture made up of 9.00 g HCL, 2.00g H2, and 165.0g Ne. What pressure is exerted by the mixture in a 75.0 L tank at 22 degree C?
what would be the effect on my calculated molecular weight of p-dichlorobenzene if my lab partner left the stopper off of the apparatus while I was weighing the solid p-chlorobenzene. Explain in detail what would happen if this occured and how it ..
Use the van der waals equation and data in the text to calculate the pressure exerted by 18 gram of H2 at 20C in a 1.00L container. Repeat the calculation assuming that the gas behaves like an ideal gas.
Which of the following compounds is quite insoluble in water, but would liberate a gas when treated with aqueous acetic acid
What will be the effect on your final %carbonate if a drop of HCl is spilled, and is not delivered to the test tube? Explain reasoning.
What is the chemical formula of a homonuclear diatomic gas if it has a pressure of 1.40 atm and a density of 1.82 g/L at 27 ºC?
Consider a 75.0g sample of H2O(g) at 125C. What phases are present when 215kJ of energy is removed from this sample?
calculate the wavelength of the electromagnetic radiation required to excite an electron from the ground state to the
A 2.0 L tank at 298 K contains oxygen gas with a partial pressure of 3.8 atm and helium gas with a partial pressure of 5.2 atm.
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