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The enthalpy of formation of MX2 is ?Hf° = -829 kJ/mol. The enthalpy of sublimation of M is ?Hsub = 117 kJ/mol. The first and second ionization energies of M are IE1 = 717 kJ/mol and IE2 = 1433 kJ/mol. The electron affinity of X is EA = -319 kJ/mol. The bond energy of X2 is BE = 151 kJ/mol.
Write the condensed and structural formulas, as well as the names for the isomers of C3H5Cl3
A weather ballon is filled with helium to a volume of 305L at 28 degree celcius and 751 mmHg . The ballon ascends to and altitude where the pressure is 504 mmHg and temperature
Equal volumes of 0.180 M weak base (Kb=2.5x10^-9) and 0.180 M HCl are mixed. Calculate the pH of the resulting solution.
Platinum crystallizes in a face-centered cubic lattice (the Pt atoms are at the lattice points only). If the density of the metal is 22.3 g/cm3, what is the unit cell edge length in pm
A mixture of gases with a pressure of 800.0 mm hg contains 60% nitrogne and 40% oxygen by volume. what is the partial pressure of oxygen in this mixture?
During a period of discharge of a lead-acid battery, 404 g of Pb} from the anode is converted into PbSO_4 (s). What mass of PbO_2 (s) is reduced at the cathode during this same period. Also How many coulombs of electrical charge are transferred fro..
A lime-soda softening plant treats a flow of 150 MGD, and the water has 86 mg/l CO2. The commercial grade of quicklime has a purity of 85% and the soda ash has a purity of 95%.
Synthesis of a Liquid Crystal, experiment in which added 500 mg of cholesterol to 1.5 mL of dry pyridine. Then added 1.7 mmol of benzoyl chloride and heated the mixture.
Describe the procedure for doing isopentyl acetate. provide the calculation and all the reagents that can be used in this reaction
Draw a possible Lewis structure for a IF7 molecule. List two possible names for this shape. What hybridized orbitals are used by the central iodine atom in this molecule
What volume of hydrogen gas is produced when 68.4 g of iron reacts completely according to the following reaction at 25 C and 1 atm iron (s) + hydrochloric acid (aq)--------- iron(II) chloride (aq) + hydrogen (g)
show the base-catalyzed condensation and dehydration products from aldol condensation of propanal
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