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determine the end value of n in a hydrogen atom transition, if the electron starts in n=2 and the atom absorbs a photon of light with a frequency of 4.57X10^14 Hz
a sample of nitrogen gas kept in a container of vulume 2.43 L and temp 27degree C exerts a pressure of 4.83 atm. calculate the number of moles of gas present
What would you expect to observe when adding one drop of iodine-potassium iodine reagent to each of the four carbohydrates?
If 5.68 g of Cu was added to 3.18 g of S8, How much copper (I) sulfide would be produced?
A situation with an industrial input of arsenic directly into the lake at 10kg/Day. The lake volume is 1.2 x 10^8 m^3, and the average depth is 10m.
A 20.00mL sample of H3Y was titrated with 0.1000 M NaOH. The first equivalence point was reached after the addition of 14.98mL of base. The second equivalence point was reached after the addition of 30.03mL.
BNCT relies on the initial targeting of tumor cells by an appropriate chemical compound tagged with 10 5 B , which preferentially concentrates in tumor cells.
at 75 degrees celsius, a gas has a volume of 3.22 dm^2. What volume will it occupy at 75 k?
calculate the molar solubility of silver iodide in 3.0 M NH3. overall formation constant for Ag(NH3)2" is 1.7 x 10^7
The initial mass of the crude ether was 141mg. The mass after recrystallization was 121mg. Calculate the percent recovery from recrystallization.
the pH of a saturated solution of a metal hydroxide MOH is 10.85 calculate the Ksp for the compound
If 122 mL of a 1.2 M glucose solution is diluted to 550.0 mL, what is the molarity of the diluted solution?
how many grams of Mg(OH)2 will be needed to neutralize 25ml of stomach acid if stomach acid is .10M HCL
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