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A series of linesin the spectrum of neutral Li atoms rise from combinations of 1s^2 2p^1 ^2P with 1s^2 nd^1 ^2D and occur at 610.36nm, 460.29nm and 413-23nm. the d orbital are hydrogenic. It is known that the ^2P terms lies at 670.78nm above the ground state. whcih is 1s^2 2s^1 ^2S. calculate the ionization energy ofthe ground state atom.
Ionization energy is the energy needed to eject an electron from an atom or ion. Calculate the ionization energy, IE
What is the Kc for the following equilibrium CO2+H2=CO+H2O if CO=0.24M, H2O=0.38m, CO2=0.30M and H2O=3.3*10-2M
Calcium hydroxide reacts with carbon dioxide to form calcium carbonate. The reaction for this process is: Ca(OH)2(s) + CO2(g) ? CaCO3(s) + H2O(g), ?H = -69.1 kJ What is the enthalpy change if 380 g of calcium carbonate is formed
Ammonium nitrate is a common ingredient in chemical fertilizers. Use the reaction shown to calculate the mass of solid ammonium nitrate that must be used to obtain 0.200 L of dinitrogen oxide gas at STP.
The procedure uses 3.0M NaOH. However, the student notices that the only solution of NaOH is concentrated (19M ) NaOH solution. How many mL of water are needed to make 500mL of a 3.0M NaOH
If 160mL of wet H2 is collected over water at 24 degrees Celsius and a barometric pressure of 738torr , how many grams of Zn have been consumed
Determine the following characteristics of the titration curve for 20.0 mL of 0.20 m NH3(aq) tiltreated with 0.25 m HI(aq) A) The initial pH B) The volume of 0.30 M HI at the equivalence point c) The pH at the half equivalence point
Two objects at different temperatures are placed in a perfectly insulated calorimeter. When the system reaches equilibrium, which of the following statements is true?
Consider the titration of 50.0 mL of 0.450 M C5H11N(aq), piperidine solution (Kb = 1.3 x 10-3), with 0.350 M HNO3(aq). What is the pH of the solution when 15.0 mL of 0.350 M HNO3(aq) is added? Calculate the pH of the solution at the halfway point of ..
Using the thermochemical data given for NO2 and N2O4 in class, determine the fraction of N2O4 that will dissociate into two NO2 molecules if one mole of pure N2O4 is introduced to a 10 liter constant volume,
write the rate law for each elementary reaction in the mechanism. D) if the first step is slow and the second one is fast, what rate law do you expect to be observed for the overall reaction.
what will the pH be after mixing the 100 ml of HCl solution and the solid NaOH together? Assume the addition of NaOH does not change the volume. (Molar Mass NaOH= 40.00 g/mole : Molar Mass HCl = 36.46 g/mole
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