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For a K+ - Cl - ion pair, attractive and repulsive energies EA and ER, respectively, depend on the distance between the ions r, according to EsubA=-1.436/r EsubR=(5.86*10^-6)/(r^9) For these expressions, energies are expressed in electron volts per K+ - Cl - pair, and r is the distance in nanometers. The net energy EN is just the sum of the two expressions above. Determine (a) the minimum bonding energy, E0, and (b) the equilibrium interionic distance, r0.
An iron bar of mass 869 - g cools from 90 oC to 5 oC Calculate the heat released (in kilojoules) by the metal. ( specific heat = 0.44 J/(g. c)
Borane forms complexes with sulfides and amines. Draw a suitable structure to represent the complex formed between BH3 and dimethyl sulfide
Determine if the concentration of formaldehyde and methanol as measured in water will convert to its relative organic acids? If there is a measured concentration of formaldehyde and methanol in a 1000L solution of water at temperature = 180 degrees..
Calculate the resulting pH if 365 mL of 2.88 M HNO3 is mixed with 335 mL of 1.10 M Ca(OH)2 solution.
What is the molarity of a NaOH solution if 28.2 mL of a 0.112 M H2SO4 solution is required to neutralize a 25.0-mL sample of the NaOH solution?
Considering the given equation Fe2O3 (s) + 3 CO (g) ? 2 Fe (s) + 3 CO2 (g) this is The overall reaction for the production of iron from iron ore (Iron (III) oxide) determine How many kilograms of iron are required to form 10,000 kilograms of Fe?
A voltaic cell employs the following redox reaction: 2Fe3+(aq)+3Mg(s)--> 2Fe(s)+3Mg2+(aq+ Calculate the cell potential at 25 under each of the following conditions.
Calculate the concentration of H2SO4 if 25.00 mL of the acid is titrated with 41.70 mL of 3.000 M KOH to produce K2SO4 and water
At a certain temperature, the root mean square speed of CH4 molecules is 1610 km/h. what is the root mean square speed of CO2 molecules at the same temperature ?
what are the ground state electron configuration of the elements in period 2 of this alternate reality?
A solution of ethanol (C2H5OH) in water is prepared by dissolving 65.8 mL of ethanol (density = 0.79 g/cm3) in enough water to make 250.0 mL of solution.
Find the activity coefficient of H+ in a solution containing 0.010M HCl plus 0.040M KClO4. What is the pH of the solution?
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