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The following electron configurations correspond to neutral atoms in excited states. What is the element and what is the ground state electron configuration for each atom?
1. 1s2 2s2 2p6 3s2 3p6 3d5
2. [Kr] 5s2 4d10 5p4 6s1
If the half-life of a first-order reaction is 4.609 hours what is the instantaneous rate of the reaction in M/day when the concentration of A equals 0.251 M?
A solution is prepared by dissolving 0.18 moles of acetic acid and 0.18 moles of ammonium chloride in enough water to make 1.0 L of solution. Find the concentration of ammonia in the solution.
a balloon is filled to a volume of 7.00 times 10^2 mL at a temperature of 20.0 degrees celcius. the balloon is then cooled at constant pressure to a temperature of 1.00 times 10^2 K. what is the final volume of the balloon?
Predominant Organic Acids Present in Softwoods such as Pine, A wood chemistry course in which we are asked to explain the hierarchy of the organic wood acids present in softwood species like pine or spruce.
what would the magnitude of q need to be to give the experimental dipole moment? Express your answer as q divided by the proton charge. In other words, what fraction of a full proton charge is the charge magnitude of the ion pair?
A 7.3648 g sample of an oxide of mercury, when heated in a stream of hydrogen, produces Hg() and 0.6126 g H2O. What is formula for the compound?
Express b in terms of the mass m of each atom and the temperature T of the gas( and other constants), given that the Boltsmann factor in P(cx) pertains to the x- component of the kinetic energy of each atom in the gas.
Put the species below in the order of strongest to weakest nitrogen-oxygen bond. Including Lewis structures and formal charges.
The calorimeter temperature rises 0.42°C. The calorimeter and water have a combined heat capacity of 32.16 kJ/K. Calculate the heat of formation of ammonia, ?H°f, in kJ/mol. The formation reaction for ammonia is: 0.5N2(g) + 1.5H2(g) ? NH3(g).
Classify the following elements as main group elements, transition metals, or inner transition metals: Fe, Ba, U, Pb, Pd, S
During an experiement, 225 mL of Wet H2 was collected over water at 29 Celcius, with a total pressure of 748 torr. How many grams of Zinc were consumed as a result
A 42.3 g mixture of the compounds magnesium oxide and calcium sulfide is 85.9 % by mass calcium sulfide. The compound magnesium oxide is 60.3 % by mass magnesium. Calculate the mass (g) of oxygen in the mixture
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