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Compute the energy in joules needed to ionize a hydrogen atom when its electron is initially in the n = 6 energy level. (Is the energy greater than or less than the +2.18 x 10^-18 J needed to ionize a ground-state hydrogen atom?).
Calculate the value of w (work) for the following system if 20.2 g of NaN3 reacts completely at 1.00 atm and 22 °
chloride solution and it turned out to be 8.35g, what is the percentage composition of the iron (III) chloride solution?
1. a researcher mixed 5.00 ml of 2.03 x 10-1 m feno33 with100.00ml of 2.05 x 10-3 m kscn using 5.0 x 10-1 m hno3
use the pka values to predict which functional groups in the amino acids aspartic acid and phenylalanine are expected
The temperature of the ideal gas in the container shown is 300 K. The gas occupies a volume of 1.27 m3. What would be the volume of the gas if its temperature were decreased to 100 K? No blocks are added to or removed from the lid.
universe on assumption that heat capacities are independent of temperature
A buffer solution is prepared by adding 5.50 g of ammonium chloride and .0188 mol of ammonia to enough water to make 155 mL of solution . What is the pH of the buffer?
the pka of benzoic acid is 4.2 show mathematically that this acid is 50% ionized at ph 4.2? Part B is Use this result to explain why precipitation of benzoic acid is incomplete if the pH of an aqueos solution of benzoate ion is lowered to Ph 7 by ..
Resonance Forms of the Enolate Ion of Acetophenone, In the stepwise trihalogenation process of a methyl group in acetophenone the methyl group in intitially deprotonated
How much heat (in ) is evolved in converting 1.00 of steam at 130.0 to ice at -50.0? The heat capacity of steam is 2.01 and of ice is 2.09
a hybrid electric vehicle, has an EPA gas mileage of 52 mi/gal in the city. How many kilometers can the Prius travel on 15 liters of gasoline?
How many molecules of triclosan are in a tube of toothpaste?
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