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What wavelength of radiation will be emitted when an electron in a hydrogen atom jumps from the n=5 to the n = 1 principal energy level? Name the region of the electromagnetic spectrum corresponding to this wavelength?
what is the pressure exerted onto the closed end of an apparatus if the atmospheric pressure is 720 torr and the height of the water is 22.3 cm.
consider a situation in which 235g of p4 are exposed to 272g of o2. what is the maximum amount of p2o5 that can
A large number of polycyclic benzenoid aromatic hydrocarbons are known. One of these, benz/a/pyrene, is a powerful carcinogen found in tobacco smoke.
Methyl orange is made by diazotizing the sodium salt of sulfanilic acid (p-aminobenzenesulfonic acid) followed by coupling with N,N-dimethyl aniline. Write equations for these reactions,giving the structure of methyl orange.
If a bottle of nail polish remover contains 181 g of acetone, how much heat would be released by its complete combustion? The density of acetone is 0.788 g/mL
The Born-Haber process is used to determine the enthalpy of formation of common salts as it is the hardest process to measure. For KBr the enthalpy of formation follows this equation
In the expression for f which you obtain, use a power series expansion of the exponential function
A 0.140-mole quantity of M(NO3)2 is added to a liter of 1.030 M NaCN solution. What is the concentration of M2 ions at equilibrium?
the ligand hydrotris 1-pyrazolylborate is commonly used in biomimetic complexes. draw out the ligand. why is this a
A mixture of CS2 (g) and excess O2 (g) is placed in a 10.0 L reaction vessel at 100.0 degrees C and the pressure of 3.00 atm, A spark causes the CS2 to ignite, burning it completely, according to the equation:
solution of ephedrine was determined with a pH meter andwas found to be 10.70. Calculate the pKb for ephedrine.
a 40.0 ml volume of ethane gas is heated from 25.0 celcius to 50.0 celcius. If the pressure remains constant, what is the final volume?
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