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Given the following data
2O3(g) -------> 3 O2 (g) AH= -427
O2(g)----------> 2O9(g) AH= +495
NO(g) + O3(g) ------> NO2(g)+ O2(g) AH= -495
calculate AH for the reaction
NO(g) +O(g) -----> NO2(g)
A gas mixture containing 0.300 mol O2, .500 mol CO and .250 H2 mol exerts a total pressure of 1.6 atm. What is the partial pressure of 02 in mm Hg
Important information about Thermochemistry, Glauber's salt, sodium sulfate decahydrate (Na2SO4 * 10H2O) undergoes a phase transition (that is melting or freezing) at a convenient temp of 32 degrees C
estimate the effective nuclear charge for an n1 n2 n3 electron in sulfur. show
Benzoic acid is a weak acid that has antimicrobial properties. Its sodium salt, sodium benzoate, is a preservative found in foods, medications, and personal hygiene products. Benzoic acid dissociates in water: C6H5COOH + H2O ==== H+ and C6H5COO- T..
Question- Iodine 131 is a radioactive isotope. After 2.00 days, 84.2% of a sample of 131-I remains. What is the half-life of 131-I
A student carried out the standardizatoin of a potassium permanganate solution using the procedure described in this experiment.
Cosidering the solubility of the nylon across the dirent solvents, what conclusion could be made about nylon solubility based on the structure of nylon and the structure of the solvents
Chemists studied the formation of phosgene by sealing 0.73 atm of carbon monoxide and 0.98 atm of chlorine in a reactor at a certain temperature. The pressure dropped smoothly to 1.32 atm as the system reached equilbrium.
What is the mass of 3.20 moles of magnesium chloride,MgCl2 ? Express your answer with the appropriate units. mass of MgCl2 =
Calculate the concentration of HPO42- ions. (pKa‘s of phosphoric acid - 2.15; 7.2 ; 12.3).
What are the number average molecular weight and weight average molecular weight of the blend?
Calculated what is the pressure exerted by the tweezers on the floor at the moment of impact
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