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MgO has the same crystal structure as NaCl. Explain from the closest packing, MgO crystal structure construction. What is the most densely packed?
at 80 degrees celsius the vapor pressures of pure liquids X,Y and Z are 385, 190,and 66 mm Hg, respectively. What pressure must be exerted on the surface of a solution containing one mole of X, three mole of Y, and two moles of Z for boiling to be..
find the total heat released by the reaction of 100.0 mL of 0.8500M NaOH and 100.0 mL of 0.8404M acetic acid.
Which substance contains molecules that will not form hydrogen bonds?
Determine how to make the following dilutions for aqueous Cu(NO3)2 from 1.0M stock : 0.50M. The 3 and 2 are both in subscript.
Given the three isomeric alcohols, 2,2-dimethyl-1-butanol, 2-methyl-2-pentanol, and 2-methyl-3-pentanol, which are chiral
A 1.29 g sample of stearic acid (C18H32O2), a common constituent of fats, is burned in a bomb calorimeter
You have a sample of bone collected from Nevada and you find that it contains strontium-90 and exhibits an activity of 2.5 Bq. How much strontium-90 was present in the bone when the animal died 45 years ago?(The half-life of 90Sr is 29 years.)
Three isotopes of argon occur in nature - 36Ar, 38Ar, 40Ar. Calculate the average atomic mass of argon to two decimal places, given the following relative atomic masses and the abundances of each of the isotopes: argon
solution a hydrogen peroxide usually comes commercially as a 30 ww aqueous solution with a density of 1.106 gml.
What volume of 3M H2SO4 is needed to neutralize all of the disodium salicylate and the disodium salicylate and the excess of NaOH present after the initial reaction
Draw structural and line-bond formulas for all the structural isomers with the formula C4H9Cl. Determine the polarity of each, showing partial changes and the overall direction of the net dipole where applicable.
mixture(O,H) is ignited with a spark and it reacts to form (H2O)liquid water. determine the temperature of water.
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