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A 2.0 L tank at 298 K contains oxygen gas with a partial pressure of 3.8 atm and helium gas with a partial pressure of 5.2 atm. What is the total pressure in the tank if the temperature is increased to 325 K?
what is the correct expression for computing the volume of gas at STP and determine What is the mass percent yield from 1.79 g of Sb in excess S, is obtained if 1.14 g of Sb 2 S 3 ?
Determine the mole fraction of HO2CCH2CHOHCO2H in this solution?
A mixture of twenty five grams of potassium nitrate(KNO3) and two grams of CuSO4*5H20 with 11.5 grams of water at 100 degree celcius temperature, 15 g ramsof water are mixed.
Suppose that the solvent ethanol could serve to replace the methanol in this process, but at the expense of double the concentrations of the solvent in the atmosphere.
Write the reaction between ferric chloride and lime slurry that results in precipitation of Fe(OH)3. For a dosage of 40 mg/l FeCl3: What is the required stoichiometric addition of lime expressed as CaO?
Determine the mass of Cr 3 + in the original solution if The total mass of the precipitate = 49.6 .
Find out the eq molar concentration of SCN- in the system.( Kc=[FeNCS2+]/[Fe3+][SCN-] =271.5)
Evaluate the energy of an electron excited from a hydrogen atom using Bohr's model. Determine the maximum wavelength of energy needed to observe a photoelectric effect for potassium.
Determine what concentration of OH - is needed to dissolve 0.015 mol of Zn(OH) 2 zinc hydroxide in a liter of solution
A 5.00 g sample of KBr at 25.0°C dissolves in 25.0 mL of water also at 25.0°C. The final equilibrium temperature of the resulting solution is 18.1°C.
Using a solution containing 0.302 grams of an antibiotic has an osmotic pressure of 8.34 mmHg At 23.6°C, 0.500 L. calculate its molecular mass.
What is the concentration of g salt per 100 g water of a saturated solution in which 3.82 g of salt are dissolved in 9.54 g of water?
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