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Use the following data to estimate ΔHf° for magnesium fluoride.
Mg(s) + F2(g) --> MgF2(s)
lattice energy
-2957 kJ/mol
first ionization energy of Mg
735 kJ/mol
second ionization energy of Mg
1445 kJ/mol
electron affinity of F
-328 kJ/mol
bond energy of F2
154 kJ/mol
enthalpy of sublimation of Mg
150. kJ/mol
Draw the structure of the major small-base dehydrohalogenation product of 2-bromo-3-methylbutane
The pH range given is typically 0 - 14. Concentrated acids as well as bases may fall outside this range. Compute the pH of hydrochloric acid, if the solution is sold as 31 % by weight (31 g HCl / 100 g solution) with a density of 1.15 g/mL.
Its activation energy is 262 kJ/mol. At 477 celcius its half life is 5 minutes. What is its half life at 527 celcius (in seconds)?
What reagents would you recommend and what mass of each one would you use to match the concentrations of Na+, Cl-, Mg2+, Ca2+ and SO42- given in the table above?
There are about 1.5 x 109 scrap tires in the world at the moment; this represents a major waste disposal problem. a. If all of these tires were burned with complete efficiency
certain metals can be extracted from their salts usually halides those containing group 17 elements such as chlorine
If 0.785 mole of ammonia gas occupies 24.5 L at 0.853 atm, what is the Celcius temperature
Use the wedge/hash bond tools to indicate stereochemistry. Show stereochemistry in a meso compound. In cases where there is more than one answer, just draw one.
Problem- At 25 °C only 0.0560 mol of the generic salt AB3 is soluble in 1.00 L of water. 1) Explain what is the Ksp of the salt at 25 °C
What is the chemical formula for the compound formed between calcium and chlorine. What is the chemical formula for the compound formed between calcium and oxygen
Given that we start with 0.036M NO(g) and 0.036M O2(g) AND end with 0.014M NO2, what is the equilibrium constant for this reaction and what are the equilibrium concentrations for NO and O2?
Give the formula of a product derived from the first-named substance that may be formed in the following reactions. Note, in the example that any lower oxidation state compound is possible
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