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Chromium metal can be produced from the high temperature reaction of Cr2O3 (chromium(III) oxide) with silicone or aluminum by the following reaction: Cr2O3+ 2Al ---------> 2Cr+ Al2O3
Calculate the number of grams of aluminum required to prepare 113g of cromuim metal by this reaction.
calorimeters, is -3226.7 kJ/mol. When 2.5127 g of benzoic acid was burned in a calorimeter, the temperature increased from 20.84 to 25.67C. What is the heat capacity of the bumb
12.00mL of 0.125M of HCl is required to titrate 21.55mL of Mg(OH)2. Calculate the molarity of the unknown base.
Explain in terms of noncovalent interactions why water and ethanol are miscible, but water and cyclohexane are not.
Does the reaction occur spontaneously at the temperature of 298 K and standard state conditions also Calculate the value of S°univ.
Calculate the volume (in mL) of a 0.680 M KOH solution that should be added to 4.000 g of HEPES (MW=238.306 g/mol, pKa = 7.56)
consider the given case as first anionsnbsp will not precipitate in the presence of agno3 and second anions get
Which of these elements occupies a position on the periodic table that is not entirely consistent with its chemical properties
What is the silver ion concentration in a solution prepared by mixing 457 mL of 0.373 M silver nitrate with 475 mL of 0.442 M sodium phosphate?
Assume that you have carried out a radical chlorination reaction on (R)-2- chloropentane and have isolated (in low yield) 2,4-dichloropentane.
determine how do you find out the new freezing point of a solution ifnbsp given the formula is delta t m x kf x i but
The normal freezing point of water is 0.0C. at this temperature the density of liquid water is 1.000 g/ml and the density of ice is 0.917 g/ml. The increase in enthalpy for the melting of ice at this temperature is 6010 J/mol.
Consider the following solutes and the composition of their aqueous solutions. In which of the following is the composition of the aqueous solution of the solute given
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