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Which is lower in energy in this reaction: a mixture of hydrogen and oxygen gases or water? how do you know that this is true? Explain and sketch an energy level diagram for this reaction to help support the answer.
Nitrogen (80 kPa), oxygen (21.0 kPa), carbon dioxide (0.03 kPa), and water vapor (2.0 kPa) are the usual atmospheric components. What is the total atmospheric pressure in kPa.
For H3PO4, a tripotic acid, Ka1 = 7.1 × 10-3, Ka2 = 6.3 × 10-8, and Ka3 = 4.5 × 10-13. What is the pH of a solution which contains 0.200 mol of K2HPO4 and 0.300 mol of Na3PO4 per liter of solution?
What is the wavelength, in nanometers, of the light emitted when the electron in a hydrogen atom drops from the energy level n_i = 12 to n_f = 5
Draw the structure of two geometric isomers with the empirical formula C5H8O that gives a positive iodoform test.
Problem- A 1.500 g sample of baking soda, NaHCO3, decomposes with heat to give 0.955 g of sodium carbonate. 1) What is the percent yield of sodium carbonate
Choose the correct answer of the following, explain why it is true, and explain why the other choices are untrue: (A) high pE is associated with species such as CH4, NH4+
a gas sample has an original volume of 680 ml when collected at 720 mm and 28degc. what will be the volume of the gas
Draw all of the resonance forms of 4-methoxybenzaldehyde which contribute to the reducwd electrophilicity of the aldehyde carbon relative to benzaldehyde.
a. If a mint leaf is 12% methanol how much should be distilled? b. What temperature should the distillation take place-approximately?
solution containing 1.00 g of barium nitrate (199.33g/mol) is combined with 500 mL of a solution containing 1.00 g of sodium sulfate (142.03 g/mol)
Utilizing the Bohr model for hydrogen-like atoms prepare first-order estimates of the energies expected for the Ka, Kß, La, and Lß x-ray fluorescence transitions and the ionization energy of an electron in the K shell. Report the energies in KeV (..
Problem- Calculate the pH of a 250 ml aqueous solution prepared by dissolving 20 g of NH4NO3 in water , given Kb=1.8 x 10 ^ -5 for NH3
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