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The Heisenberg uncertainty principle also holds for energy and time, two complimentary variables. How well can we know the energy of molecular excited states with lifetimes of a)10 micro seconds; b) 10 ns and c) 10 ps.
Calculate kp and kc for the dissociation.
A 20.0-mL sample of 0.25 M HNO3 is titrated with 0.15 M Na OH. What is the pH of the solution after 30.0 mL of NaOH have been added to the acid
A 150.0 ml flask contains 0.391 grams of volatile oxide of sulfur. The pressure in the flask is 750mmHg and the temperature is 22 degrees Celsius.
A solid brick of dry ice (CO2) weighs 0.75 kg. Once the brick has fully sublimated into CO2 gas, what would be the volume of solid brick at STP.
when two grams of sodium hydroxide were dissolved in 149 grams of h2owater in a calorimeter at twenty four degree
what mixing proportion is required for lime stone with 91% CaCO3, and clay with 31% CaCO3 to get a raw mix with a CaCO3 content of 76%.
A balloon was filled to a volume of 2.50 rm L when the temperature was \rm 30.0^{\circ}C. What would the volume become if the temperature dropped to rm 11.0^{circ}C.
Calculate the experimental percent by mass of copper in the sample and the theoretical mass percent of copper in copper (II) acetate monohydrate.
When 0.228 g of the hydrate ZnSO4•xH2O is heated, 0.128 grams of anhydrous ZnSO4 remains. What is the value of x in the formula for the hydrate
In ethanol, with an absorbance of 1.210 (no units) at a wavelength of 530 nm. At this wavelength, the extinction coefficient of rhodamine 6G in EtOH is 116,000M^-1 cm^-1. If I have a 0.100 M solution of rhodamine 6G, what pathlength cell will be n..
What spectral features including mass spectra, IR spectra, proton spectra and carbon spectra allow you to differeniate the product (methyl benzoate) from the starting material (benzoic acid)
Determine what volume would it occupy at zero degree Celsius temperature at same pressure? Express your Answer in units of mL
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