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Use the simulator for the hydrogen atom (https://phet.colorado.edu/en/simulation/hydrogen-atom) to estimate the energy needed to transfer one mole of electrons from the energy level n = 1 to the level n = 3.
Explain which concentration below must be reported for a solution if a precision of 0.1% is needed in the data analysis? Define mathematically.
The tap water found in many areas of the U.S and other parts of the world leave white deposites when it evaporates. Is this tap water a mixture or a compound
construct molecular models of threo- and erythro-2,3-dibromo-3-phenylpropanoic acid and show which diastereomer would be formed by anti addition of bromine to trans-cinnamic acid
Calculate the lattice energy (kJ/mol) of the hypothetical ionic compound MX2 from the information given below. IE1+ IE2 (M) = 1,487 kJ/mol M(s)
a researcher requires 20l if a buffer solution with pH=4.25. How many moles of formic acid, and sodium fomate, could be dissolved in the solution to make this buffer, if none of the equillibrium concentrations should be under 0.100M?
Anfinsen studied the folding properties of the enzyme ribonuclease using the denaturants 2-mercaptoethanol and urea. How does each of these materials contribute to the unfolding of the protein,
every ten rounds an amplification of approximately 1000-fold. So, to get an amplification of 4.000 one would do 2 + 10 = 12 rounds . This, of course, assumes high yields for each step.
In this experiment, when the density of the solid is determined, the volume of the solid is found by subtracting the volume of water
determine the solubility of CO2 in soda water at 25 degreeC if the pressure of CO2 is 5.2 atm
iF 0.80g of a gas occupies 295 mL at 25 degrees Celcius and 680 mm Hg of pressure, what is the molar mass of the gas.
In the transition metals (the d-block), the electron configuration of cations is different than what you might expect. Instead of the d electrons being lost first, s electrons are lost first.
Container A holds 712 mL of ideal gas at 2.10 atm. Container B holds 164 mL of ideal gas at 4.50 atm. If the gases are allowed to mix together, what is the resulting pressure
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