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Calculate the lattice enthalpy (?Hl° in kJ/mol) of the MF2 metal fluoride using the following data: Bond dissociation enthalpy of F2(g) = 159 kJ/mol Electron affinity of F = -328 kJ/mol Enthalpy of sublimation of M = 123 kJ/mol First ionization energy of M = 432 kJ/mol Second ionization energy of M = 604 kJ/mol Standard enthalpy of formation of MF2(s) = -399 kJ/mol
What is the molecular formula for the alkane with 39 carbon atoms? What is the molecular formula for the cycloalkane with 38 carbon atoms?
Calculate the maximum mass of carbon dioxide that could be produced by the chemical reaction. Round your answer to significant digits
Compound A is unchanged when treated with dilute base, but treatment of A with concentrated NaOH and heat gives a new compound B (C10H19N) that decolorizes Br2 in CCl4. Compound B is identical to the product obtained from the reaction sequence bel..
a) If the initial sample is 8.50 g, what mass of the original iridium-192 remains after 130 days? b) Estimate the half-life of the radioisotope. c) How many days would it take for one-fourth of the sample to decay?
The initial volume of the balloon is 5.00 L, and the pressure is 760 mmHg. The balloon ascends to an altitude of 20 km, where the pressure is 76.0 mmHg and the temperature is -50 degrees celsius. What is the new volume,V2 , of the balloon in liter..
The energy bar contains 100 mg of sodium, which constitutes 4% of the maximum recommended daily intake of sodium.
a technician is plating a faucet with chromium. What mass of chromium could be deposited by electrolysis of an aqueous solution of Cr2(SO4)3 for 180 minutes using a constant current of 10.0 amperes
Add 1mg of alcohol dehydrogenase. Assuming all of the ethanol is converted to acetaldehyde, what will the final concentration of NADH be in the solution
The shielding of electrons gives rise to an effective nuclear charge,Zeff, which explains why boron is larger than oxygen. Estimate the approximate Zeff felt by a valence electron of boron and oxygen, respectively
Calculate the percent ionization of hypobromous acid (HBrO) in solutions of each of the following concentrations (Ka = 2.5e-09.) (a) 0.135 M % (b) 0.583 M % (c) 0.601 M %
A and B mix to form an ideal solution.what is the Gibbs energy of A in the solution as compare to the Gibbs energy
Estimate the age of a bottled wine that has a tritium, 3^H, content 65.% that of freshly bottled wine. Tritium decays by beta decay and has a half life of 12.3 yr.
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