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An electron in a hydrogen atom is excited with electrical energy to an excited state with n= 2. The atom then emits a photon. What is the value of n for the electron following the emission?
Draw all of the resonance structure of SCP-.write formal charges on All atoms. point out which one has most likely resonance
how many joules of heat are produced for each electron? c. If the circuit operates for thirty mins, how many mles of electrons will have flowed through the resistor?
Consider the malate dehydrogenase reaction from the citric acid cycle. Given the following concentrations, calculate the free energy change for this reaction at 37.0 °C (310 K). ?G°\' for the reaction is 29.7 kJ/mol. Assume that the reaction occur..
A solution is prepared by mixing 80.0 mL of alcohol with enough water to give 200.0 mL solution. Calculate the % v/v concentration of alcohol in the solution.
Give the basicity order? List from most to least basic. 3. Explain the basicity order in terms of resonance and inductive (polar) effects and solvation effects.
Draw the three different plates you would expect from obtaining a TLC from ibuprofen on silica gel using (a) toluene, (b) ethyl acetate, and (c) methanol as the eluting solvents
At constant temperature and volume, 3.8?10-3 mol of helium is added to a 1.0 L sample of xenon at 0.081 atm and 325 K. What is the total pressure of the gas mixture
if 83.7 grams of aluminum al and 195.2 grams of sulfur s are put into a container and allowed to react according to the
Three solutions are mixed to form a single solution. One contains 0.2 mol Pb(C2H3O2)2, the second contains 0.1 mol Na2S, and the third contains 0.1 mol CaCl2.
Calculate E when 770.0 g of CH3OH(g) completely reacts at a constant temperature of 300 K and constant pressure of 0.95 atm. R = 8.314 J/mol*K and R = 0.08206 atm*L/mol*K.
What is the total pressure in a 20.0 L flask 20.0°C, which contains 0.127 moles of H2 and 0.288 moles of N2?
Calculate the energy in joules and calories lost when 10.0 gm ethanol, {C_2H_5OH}, cools from 62.5 0C to -46.0 0C?
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