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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?
A patient is given a 58.0-mg dose of Iodine-131 to image the thyroid. This nuclide has half life = 8.0 days. What mass of the nuclide remains in the patient after 33.0 hours, when the thyroid scan is taken
calculate the standard emf of a cell that uses the mgmg2 and cucu2 half-cell reactions at 25 degrees celsius. write the
how many grams of sodium lactate must be added to a 1.00l solution of .400m lactic acid to make a buffer with a ph of
If 1.0 mole of NOCl and 1.00 mole of Cl2 are placed in a 1.00-liter container and permitted to react at this temperture, will the reaction shift to the left or to the right
While a 3.60g sample of a non-electrolyte is dissolved in 80.0g of benzene, the resulting solution freezes at 2.75 degrees C. The Kf for benzene is 5.12 degress C/m. pure benzene freezes at 5.48 degrees C. Explain what is the molecular weight of t..
Safrole is used as a topical antiseptic. Calculate the vapor pressure of a solution prepared by dissolving 0.75 mol of safrole in 950 g of ethanol ( molar mass = 46.07 g/mol). P°ethanol = 50.0 torr at 25°C
1. partition functions for particle in the boxconsider the he atom again with the three wave functions that you do not
The C-C bond in this structure should become the C2-C3 bond in (2R,3S)-2-bromo-3-phenylpentane. Type the name of an atom or group to add to the structure, or press the atom's button. Click on an H atom to replace that H atom with the atom or group..
A 3.9-g sample of Colorado oil shale is burned in a bomb calorimeter, which causes the temperature of the calorimeter to increase by 5.0°C. The calorimeter contains 1.00 kg of water (heat capacity of H2O = 4.184 J/g°C) and the heat capacity of the..
Explain how the sponge nucleoside cytosine arabinoside and fungal nucleoside cordycepin combat cancer (give their structures as well).
two samples an aqueous solution show no precipitate when agno3 or bacl2 is added. what anions are shown to be
Would a reaction occur if a piece of Sn metal were placed in a ZnSO4 solution. if so write a net ionic equation
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