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Identical hard spheres of radius R are packed together to form a simple cubic lattice. What is the ratio a/R, where a is the edge length of the unit cell?
The molar heat of fusion of naphthalene (C10H8) is 4610cal/mol. What is the heat of fusion in kJ/g
Describe the role of the citric acid cycle as a central metabolic mechanism. Explain what happens to the cells' abilities to oxidize acetyl CoA when intermediates of the cycle are drained off for amino acid biosynthesis.
aqueous solution in the upper intestinal tract where the pH is 5.83. Calculate the percent of sulfisomidine in the neutral form in the solution of the intestinal tract.
The remaining white solid in the filter paper has ammonia water poured through it. This turns the precipitate in the filter paper black. The new filtrate is treated with hydrochloric acid (HCl), giving a white precipitate. What metal ion or ions a..
for each formula unit of sodium decahydrate: Na2SO4 * 10H2O, a) how many atoms of each kind are present? B) how many water molecules would be liberated for every molecule of the hydrate that is decomposed by heating?
Calculate the equilibrium partial pressures of O2, NOCl, NO2, and Cl2. Peq(O2) = . Peq(NOCl) = . Peq(NO2) = . Peq(Cl2) = . (b) Calculate KP for this reaction. KP
Iranian President Mahmoud Ahmadinejad has a mass of 130 lbs. If Iran abandoned it's nuclear energy program and instead converted its President entirely to energy
Write molecular, total ionic, and net ionic equations for the reaction of AgNO3 and NaCl (Use the lowest possible coefficients. Include states-of-matter under SATP conditions in your answer.)
The formal charge on the P atom is zero and It is best described with three resonance structures.
The Ksp of CuI is 1.1X10^-12. Find Ecell for the cell: Cu(s)|I^-(aq)(1.0M)||Cu^+(aq)(1.0)M|Cu(s)
What is the molarity of a NaOH solution if 28.2 mL of a 0.112 M H2SO4 solution is required to neutralize a 25.0-mL sample of the NaOH solution?
A metal object with a mass of 19 g is heated to 96 degree celcious, then transferred to a calorimeter containing 75 g of water at 18 degree celcious
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