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For the hydrogen atom, calculate the wavelength of light needed to excite the electron from the fifth energy level to the ninth energy level.
Write an equation, using the curved-arrow notation, for the acid-base reaction that will take place when each of the following are mixed. If no appreciable acid-base reaction takes place, because the equilibrium is unfavorable, you should so indic..
A cylinder is labeled "PENTANE." When the gas inside the cylinder is monochlorinated, five isomers of formula C5H11Cl result. Was the gas pure n-pentane, pure isopentane, pure neopentane
How much work is needed to send 2.5 gal/hr of fuel through a 8mm line with a .09mm nozzle at 1500 psi absolute coming from a fuel tank at 1 atm absolute
An electron (electron mass 9.11 x 10^- 31kg) moving near an atomic nucleus has a speed of 6 x 10^6 ± 1% m/s. What is the uncertainty in its position. 1) 1 x 10^-9m 2) 2 x 10 ^-9m 3) 1 x 10^-11m 4) 2x 10^-11m 5) 3 x 10^-11m
41.0 g of glass at 95 deg c is placed in 175 g of water at 21 deg c in an insulated container. they are allowed to come
A bottle containing 335 of cleaning solution is used for carpets. If the cleaning solution has a specific gravity of 0.850, what volume of solution was used?
Name the alkyl branch present on the ring of ibuprofen that is across from the acid functional group
A mixture of Na2CO3 and NaHCO3 has a mass of 81.1g. it is dissolved in 1.00L of water and the pH is found to be 9.92. what is the mass NaHCO3 in the mixture
Describe how you would make 4 liters of a 0.075 M phosphate buffer at pH of 7.15 without using a pH meter, if the only materials
As we discussed in class, we are not necessarily limited to using a minimal basis set. We may write the molecular orbitals as a linear combination of as many atomic orbitals as we wish.
In May 1990 the French TGV train traveled the distance from Paris to Lille, France (127 miles) in .819 hours. What was the speed of the TGV in m/s?
Calculate the enthalpy of solution of Na2SO4 in water at this concentration. Compare your result with that calculated using data tables.
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