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You're at the zoo and have a big red 3.20 L helium balloon. The barometric pressure is 790.0 mm Hg.
Then you hear the roar of a lion. Startled, you accidently release the balloon. It flies away. By the time it reaches the clouds the atmospheric pressure is only 0.300 atm. What is the new volume of the balloon?
Find out the kinetic energy of a photoemitted electron from the surface of Cs if the wavelength of the incident light is 525 nm. The work function for Cs is 2.14eV. Explain what is the velocity of the electron
Spica has a surface temperture of 23kK (2.3 x 10^4 K). At what wavelength does Spica emit the maximum intensity of light?
A patient is given 0.055mg of technetium -99m, a radioactive isotope with a half-life of about 6.0 hours.
if the density of carbon dioxide in air is .65mg/L, what volume is occupied by 25kg of carbon dioxide?
Explain how to sketch a boiling point-composition figure for mixtures of toluene and water. With water mole percent of 20.2% as well as toluene mole percent 79.8% also a boiling point of 85* C.
Compute the unsaturation number (aka index of hydrogen deficiency) associated with C4H3NO2S. Interpret your results. If there are no triple bonds in this compound, can you suggest a reasonable structure for the compound
phosphenolpryuvate how many moles of ATP can be derived just from reduced electron carriers (not substrate-level phosporylation?
What exactly is the reduction of alkynes? I just understand that it is a method for synthesizing alkenes. Why are the leaving groups for E2 reactions not as good as E1 reactions?
Which two particles that make up atoms have about the same mass? Which two have the same magnitude of electric charge? What is an electric current, and what are its units? (Give two equivalent units.)
Explain the laboratory preparation of one Litre
After 70.82 minutes of surgery the drug began to lose its effect, but more surgery was required. How many moles of the anesthetic must be re-administered to restore the original level of the anesthetic
Consider 50.00 mL of 0.100 M lactic acid (Ka = 1.4 × 10-4) that is titrated with 0.100 M NaOH. a. What is the pH at the midpoint (also called half-way point) of the titration
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