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in the hydrogen atom, for which transition is the emission line observed at shorter wavelength, n=4 to n=2 or n=5 to n=1? Show the equation needed to figure this out. Consider the relative size of delta E to determine the relative wavelength.
Solve an equilibrium problem (using an ICE table) to calculate the pH of 0.12M HF, 0.12M NaF, and a mixture that is 0.12M HF and 0.12M NaF.
A 245 mL stock solution contains 2.3 M Ca(CN)2. When 100 mL of the stock solution is diluted to 120 mL, how many moles of CN- ions will be contained in the dilute solution?
Consider the reaction Pb(s) + 2H^+(aq) ? Pb^2+(aq) + H2(g). If the hydrogen gas pressure is maintained at 1.00 atm and the lead(II) ion concentration is 0.025 M, find the pH at which this reaction is at equilibrium.
Which element in the periodic table has the smallest ionization energy?
A gas sample is held at constant pressure. The gas occupies 3.26L of volume when the temperature is 51.6 F . Determine the temprature at which the voloume of the gas is 3.45 L.
The rate constant are 0.039 L/mol-1*s-1for the forward reaction (CO2 + H2O ? H2CO3) and 23 s-1for the reverse reaction (H2CO3 ? CO2 + H2O). What is the order of the reverse reaction
Determine the phase composition and temperature when equilibrium is reestablished?
We have a nuts, bolts, and indirect measurement lab coming up. We'll get a bag of nuts/bolts and I need 2-3 methods on estimating the mass of a bolt without opening the bag. Thanks.
Draw the skeletal structure for major organic product produced when the arene given reacts with 2 equivalents each of Na and HOCH3
a 436 mL volume of hydrogen gas is collected at 25 kelvin and 725 torr. what volume will gas occupy at STP
A gas originally at 27 degrees celsius and 1.00 atm pressure in a 3.9 L flask is cooled at constant pressure until the temperature is 11 degrees celsius. determine the new volume of the gas and express your answer in Litre.
Substitution and elimination reactions are competing reactions. Under what conditions can you ensure that substitution will predominate
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