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Problem- A light emitting diode emits photons with an energy of 3.221 x 10^-19 J. What is the energy per mole of photons emitted. Ans. 1.94 x 10^5 J/mol.
Answer all three questions and provide required steps
Determine the point group of each of the three possible geometries of the hypothetical Be3+ on, ten draw the molecular orbitals for each geometry,
A 0.160-mole quantity of NiCl2 is added to a liter of 1.20 M NH3 solution. What is the concentration of Ni2 ions at equilibrium. Assume the formation constant* of Ni(NH3)62 is 5.5 × 108.
Consider a metal atom, which we will give the symbol M. Metal M can readily form the M+ cation. If the sphere on the left below represents the metal atom M, which of the other three spheres would probably represent the M+ cation? Explain your choi..
Complete the reaction of salicylic acid and 4-aminobenzenesulfonic acid by drawing the expected product.
Question- A sample of gas at a pressure of 1.79 atm and a temperature of 21.2oC is heated to 48.5oC. If the gas expanded to 2.59L from 2.12L, what is the pressure of the heated gas
what is the rate law? b) calculate the value of the rate constant c)calculate the initial rate for an experiment when both I- and OCl- are initially present at 0.15 mol/L
The equilibrium constant KC for the reaction 2H2(g) + CO(g) ? CH3OH(g) is 135 at a certain temperature. If there are 5.23 ? 10?2 moles of H2 and 3.73 ? 10?
If 2.55 mol of ethane (C2H6) undergo combustion according to the unbalanced equation C2H6 + O2 -→ CO2 + H2O , how much oxygen is required? Answer in units of mol.
Describe the bonding in SeO2 in valence bond terms. Note whether or not there is delocalized bonding and explain how molecular orbital theory can be useful here.
Draw a structural formula of an alkene or alkenes (if more than one) that undergo acid-catalyzed hydration
The solubility of sodium chloride in water is 35.7 grams per 100 mL at 0 degrees celsius. What is the maximum amount of sodium chloride that will dissolve in 250 mL of water at 0 degrees celsius?
how many moles of nh42so4 are there in 100.00 g of ammonium sulfate? how many moles of ammonium ions are in 100.00 g of
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