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Describes the values of the quantum numbers n, l, ml, s, ms, for each of the valence electrons in the ground state of a nitrogen atom?
An electron with energy 2.00 eV intrudes upon a barrier of length 1.00 nm and height 5.00 eV. Determine the spatial decay parameter κ for the tunneling of wave function through the barrie
Determine the transmission probability through this barrier by using the approximate expression for transmission probability in the limit of high and long barrier.
Determine the total dilution if the concentration of the original solution is 0.6 mM and the diluted solution is 0.2mM?
The first step is the protonation of the alcohol oxygen to form an oxonium ion. The dehydration of 3-methyl-2-butanol forms two minor and one major product.
Find out the hydroxide ion concentration in this solution when solid iron (II) hydroxide is added to water, the resulting solution contains 1.4 × 10-3 g of dissolved iron (II) hydroxide p
Calculate the mass percentage of isopropyl alcohol in the solution? When a 6.02-g aqueous solution of isopropyl alcohol contains 4.08 g of isopropyl alcohol.
Then it flies 612 miles from City B to City C with the bearing of 41degrees. Compute straight line distance from City C to City A.
4- Solutions of sodium hypochlorite, NaClO, are sold as bleach. They are prepared by the reaction of chlorine with sodium hydroxide. 2 NaOH(aq) +Cl2(g) → NaCl(aq) +NaClO(aq) + H2O(l)
When it is heated with carbon in the presence of chlorine, titanium tetrachloride (TiCl4) is produced. A titanium ore contains rutile (TiO2) plus some silica and iron oxide.
Write N as the exponential function of t. Compute the growth factor. How many asthma sufferers are predicted worldwide in year 2010 with linear model? With exponential model?
Determine the number of moles of water (H2O) are in 39.6 g of sodium sulfate hydrate, Na2SO4 •10H2O? And also find out the moles of phosphorus, P, are in 39.0 moles of calcium phosphate, Ca3
Calculate the ml of HNO3 solution that should be made when an experiment needs 2.033 g of HNO3 dissolved to make a 6.00 NHNO3 solution to neutralize a base.
The difference among the atomic radii of NA and K is relatively large compared to the difference between the atomic radii of Rb and Cs. Why?
If the equilibrium partial pressure of NO2(g) is 0.228atm, and the equilibrium partial pressure of N2O4(g) is 0.451atm. Find out the equilibrium constant for this reaction?
The population has size 5000 at time t=0, with t in years. If population reduces by 100 people per year, determine the formula for population, P, at time t.
Explain how much AlCl3 can be obtained from 8.35g chlorine and 2.55g aluminum? Pertain to the reaction: 2Al + 3Cl2 ----->2AlCl3
The molar mass of carbon is 12.00 gmol-1. The volume of the nucleus of a carbon atom is about 9.9 *10-39 mL. Find out the density of the carbon nucleus? Covert using this: 6.022 * 1023/ mol
Determine the molarity of the NaOH solution. During the standardization of a NaOH solution, you record that it takes 23.85 mL NaOH solution to reach the titration endpoint of an aqueous solution co
Calculate the acetic acid concentration in vinegar solution when a 25.00 mL sample of vinegar is titrated with 0.1072 mL NaOH and it takes 41.27 mL NaOH solution to reach the endpoint.
Explain how much energy would it take to totally dissociate the U-235 nucleus (M=235.043923) into its component neutrons and protons?
Assume y the number of cases of the disease, is decreased by 12% each year. How long does it take to decrease number of cases to 1000?
A mixture of SiO2, NaCL and CaCO3 is separated following the procedure in this experiment. Specify how the following procedural changes would affect the amount of specified substance recovered
Calculate the mass of chlorine that reacted with the calcium when A crucible weighs 35.032 g. A calcium sample weighing 0.401 g is placed in the container.
State the molecular weight of K2Cr207 with the correct number of significant figures and finds its uncertainty.