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1)Electrons in the 2s and 2p orbitals have _______________ quantum numbers n and electrons in the 2s and 3s orbitals have _____________ quantum numbers n. 2) A molecule of oxygen gas (O2?) has a velocity of 2800 m /?s. What is its de Broglie wavelength? 3) What is the electron configuration of the oxide ion (O2-?)? 4) A string that is restricted at both ends has a length of 1.50 m. What is the wavelength of the string's fundamental frequency?
For the decomposition of solid ammonium chloride into ammonia gas and hydrogen chloride gas Kp = 1.1 x 10-16. Calculate the change in standard free energy for this decomposition reaction.
how many grams of sodium formate nacho2 must be added to 750.0ml of .250 m of formic acid hcho2 to obtain a buffer with
1.0994 g lithium sulfate dissolved in 50 mL water b. 10.3 mg lithium sulfate dissolved in 0.50 mL water c. 0.2575 g lithium sulfate dissolved in 12.5 mL water d. 5.497 g lithium sulfate dissolved in 2.5 L water
2,4,6-Trichlorophenol is considerably more acidic (pKa = 6) than phenol. Draw the resonance structures for the 2,4,6-trichlorophenoxide ion that explain why it is more acidic, and provide ONE sentence explaining the significance of these structures..
what radial position is the velocity of an individual fluid element equal to the average velocity of the fluid? (r= r subscript c and 0
A compound is known to contain 52.17% carbon and 27.78% oxygen by mass. Each molecule contains two atoms of oxygen. What is the molar mass of this substance
Uric acid dissociates as shown in the figure at the right with a pKa of 5.80, and can be treated as a simple monoprotic acid in this pH range.
How would the ground-state energy levels of X and H compare and would the energy of an electron in the n = 2 level of H be higher or lower than that of an electron in the n = 2 level of X? Explain your answer.
Draw a six carbon alkyne that can exist as diastereomers. The molecule should only contain only carbon
A mixture of 82.49 g of aluminum ( Picture = 26.98 g/mol) and 117.65 g of oxygen ( Picture = 32.00 g/mol) is allowed to react. What mass of aluminum oxide ( Picture = 101.96 g/mol) can be formed?
The weak acid HZ has a ka of 2.55*10^-4. What is the pH of a .075 M HZ? What is the pOH of .045 M HZ?
The pK value for the active site residue Glu35 is 6.3. what is the ratio of ionized to protonated Glu35 residues at pH 7
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