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The ozone molecules in the upper atmosphere stratosphere absorb much of the UV radiation from the sun. The temperature of the stratosphere is -23.0 ºC, as well as the pressure due to the zone is 1.4 x10-7 atm. Compute the number of ozone molecules present in 1.00 m3 (1L = 10-3 m3) in the stratosphere.
What is the wavelength (in meters) of photons with the following energies? In what region of the electromagnetic spectrum does each appear?
What is the magnitude of the electric field amplitude associated with the beam and the corresponding photon density per cm3?
Describe a procedure that might be used to separate p-dichlorobenzene
If 0.1800 g of impure soda ash (Na2CO3) is titrated with 15.66 mL of 0.1082 M HCl, what is the percent purity of the soda ash. Na2CO3(aq) + 2 HCl(aq) ? 2 NaCl(aq) + H2O(mc048-1.jpg) + CO2(g)
consider a reaction in which ferric oxide is converted to iron and gaseous oxygen. if this reaction is only 83
How is unreacted t-pentyl alcohol removed in this experiment. Look up the solubility of the alcohol and alkyl halide (t-pentyl chloride) in water.
What about the molecule as a whole? Is that molecule CH4 a polar or non-polar?
Carbon disulfide, CS2, is a volatile, flammable liquid. It has a vapor pressure of 400.0 mmHg at 28.0°C and 760.0 mmHg at 46.5°C. What is the heat of vaporization of this substance?
react 3-methyl-2-butanol with HBr. Predict the products and explain why the experiment will not be as successful for production of an alkyl bromide as the reaction of 1-butanol with HBr.
A piece of tin weighing 85.251 g is placed into 41.1cm3 of ethyl alcohol (D=0.798) in a graduated cylinder and it sinks to the bottom . The alcohol rises to 52.8cm3
Calculate the molarity of the solution at the limit of detection if the molecular weight of THC is 315 g/mol
Consider the electron configuration of Al: (1s)^2(2s)^2(2p)^6(3s)^2(3p). Write down all possible terms describing this configuration. Which term describes the ground state of Al according to Hund's rules
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