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A 2-liter Dumas bulb contains n moles of nitrogen at 0.5 atm pressure and at T°K. On addition of 0.01 moles of oxygen, it is necessary to cool the bulb to a temperature of 10°C in order to maintain the same pressure. Calculate n and T.
When 1 mol of Fe2O3(s) is formed by combustion of Fe(s)with O2(g), 824 kJ of heat is liberated. By this reaction, how many mol of Fe should be consumed in order to liberate 100. kcal of heat
the freezing point of the solution is 5.144 degrees celcius. Pure benzene freezes at 5.444 degrees celcius and has a Kf of 5.12 degrees celcius/m. What is the molar mass of thyroxine
NaOH solution is needed to just neutralize excess acid after 20mL of 0.10 M HCl was added to 1 gof the antacid, how many moles of acid can the antacid counteract per gram?
What is the partial pressure of each substance if the total pressure of the mixture is 2.35 atm?
How long will it take to deposit 0.00470 moles of gold by electrolysis of KAuCl4 (aq) using a current of 0.214 amperes? Which metal would be suitable to provide cathodic protection from corrosion for an iron bridge?
Calculate the standard enthalpy of combustion. The standard enthalpy of formation of palmitic acid - 208kJ/mol
Ammonia is used for refrigeration. the heat of vaporization of ammonia is 23.35kJ/,mol. How many grams of ammonia would have tovaporize toofreeze one tray of ice cubes
what mass of magnesium in reaction with an excess of hydrochloric acid is needed to produce 128 ml of hydrogen h2 gas?
Problem- The solubility of sodium chloride in water is 35.9 g NaCl 100 g of water at 25 degree C. Calculate the mass percent and molality of NaCl in a saturated solution.
Complete as well as balance the displayed half reaction in acidic aqueous solution taking into account the electrons
consider the combustion reactionch4 g 2o2 g co2 g 2h2o lis this an exothermic reaction?if 100g of natural gas ch4 is
The following reaction has equilibrium constant (kc) of 13 at 1700 K. The initial concentration of HI is 1.17 x 10^-3 M, H2 is 3.25 x10^-4 M, and l2 is 3.25 x 10^-4 at 1700k. Calculate Qc and determine which direction the system will travel as it ..
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