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A sample of gas-phase hydrogen atoms have electron states ranging from n=1 to n=6. What is the maximum number of electronic transitions that could occur in this sample that would contribute to the emission spectrum of this sample?
The pressure of 9.0 L of an ideal gas in a flexible container is decreased to one-eighth of its original pressure, and its absolute temperature is decreased to one-forth of the original. What is the final volume of the gas?
The term water of hydration is applied to which to which of the following. A) water molecules required to dissolve a solid B) water molecules associated with ions in solution
When 2.00 mL of a 5.0 ppm Cu^2+ solution was added to the above Cu^2+ sample solution, the new absorbance was found to be 0.324 AU. What was the concentration of Cu^2+ in the original 10.0 mL solution
aluminum has a face-centered cubic lattice with all atoms at lattice points and a unit-cell edge length of 405.0 pm.
How many moles of MgI2 are in 1.3L of a 0.2M solution? How many moles of Mg2+ are in the solution? How many moles of I-?
How do the following changes affect the value of the equilibrium constant for a gas-phase exothermic reaction:
Rubidium has two naturally occurring isotopes with the following masses and natural abundances, Calculate the atomic weight of rubidium.
you need to make an aqueous solution of 0.180 m sodium sulfate for an experiment in lab using a 250 ml volumetric
Calculate the pH of 23.5 mL of a .165 M aqueous NH3 solution after the addition of 21.7 mL of .100 M HCL. The kb for NH3 is 1.8x10(-5)
Calculate the concentration of HPO42- ions. (pKa‘s of phosphoric acid - 2.15; 7.2 ; 12.3).
When 25.0 g of Zn reacts, how many L of H2 gas are formed at 25 °C and a pressure of 854 mmHg?
What is the important component in 1.0 M NaOH? What is the important component in 1.0 M HCl
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