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What do valence electrons have to do with first ionization energy?
In one form of the Fullerene C60 molecules C60 form a cubic - closest packed array of spheres with unit cell edge length of 1410pm. Explain what is the density of crystalline C60 in g/cm3
Decribe how to prepare 2.0 liters of a .20 M NaOH solution from 50%. (w/w) Naoh solution that has a density of 1.53 g/mL, and doing all measurements by volume, not mass.
if 3.93 g of sodium borohydride contains 2.5times 1023 h atoms how many moles of h are present in 37 cm3 of sodium
If attractive interactions among the molecules of a gas are more important than repulsive interactions; its fugacity coefficient is less than 1.0
The vapor pressure of pure water at 70°C is 240. mm Hg. What is the vapor pressure depression of a solution of 150. g of the antifreeze ethylene glycol, C2H6O2, a nonvolatile compound, in 215 g of water?
Which bronsted-lowry acid is not considered to be a strong acid in water. A)H I B)H Br C)H2S O3 D)H NO3
What kinetic energy must the electrons have in order to resolve a protein molecule that is 5.10 nm in diameter? Take the mass of an electron to be 9.11× 10-31 kg.
What mass of carbon dioxide can 1.00 kg of lithium hydroxide absorb?
calculate theformation constant forAg(S2O3)23- . Show yourcalculations with units and the correct number of significantfigures.
What is the first element on the periodic table and what is the solubility?
What is the order of increasing polarity of the compounds: benzophenone, trans-stilbene, 2-naphthol, benzoic acid
Treatment of X with Ag(NH3)2 (silver diamine complex), yields a solid Z. When X is treated with H2O/H2SO4, an optically active product W, C7H14O, is formed. Draw the structures of X, Y, Z, and W.
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