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Mercury (Hg) has a normal boiling point of 356.7 °C, and a standard heat of vaporization of 59.11 kJ/mol.
Determine what mass of mercury will vaporize in a closed container at 22°Cif it has a volume of 1.7 L of space above the liquid.
Out of white phosphorus and red phosphorus, which one is more reactive and why?
.35 M NaOH solution to reach the equivalence point. Determine the molar mass of the acid and given nthat the pH at the half way point to the equivalent point is 3.86. Calculate the Ka of the unknow acid.
How many moles of table salt (NaCl) are in a box that has 117 grams of salt? (atomic mass of Na = 23.0; atomic mass of Cl = 35.4)
The half-equivalence point of a titration occurs half way to the end point, where half of the analyte has reacted to form its conjugate, and the other half still remains unreacted
What is the boiling point of acetone at an elevation where the external pressure is 323 torr?
When 7 mL of a solution containing 2.33 M Na3PO4 is diluted to 30 mL, a dilute solution is formed. How many moles of Na+ ions are contained in 18 mL of the dilute solution
Hydrogen iodide decomposes according to the reaction 2HI(g)H2(g) + I2(g) A sealed 1.50 L container initially holds .00623 moles of H2, .00414 moles of I2, and .0244 moles of HI at 703K. When equilibrium constant is reached, the concentration of H2(g)..
describe the preparation of 400 mL of a solution that is 0.0500 M in I-, starting with MgI2.
Explain PH and Biochemistry, Determine the weight in grams of sodium dihydrogen phosphate (M.W.138.01) and disodium hydrogen phosphate (M.W 141.98) needed to prepare 1L of a standard buffer at pH 7.00, with a total phosphate concentration of 0.100..
Calculate the potential delivered by a voltaic cell operating by the following reaction if all of the dissolved species have a concentration of 0.035 and the pressure of H2 (g) is 1.00 atm.
Compute the volume (in mL) of a 0.320 M KOH solution that must be added to 4.500 g of HEPES MW=238.306 g/mol, pKa = 7.56 to give a pH of 7.64.
The molar volume of Al2O3 at 25°C and 1 atm is 25.715 cc/mole. Its coefficient of thermal expansion is 26·10-6 K-1 and the coefficient of compressibility is 8.0·10-7 atm. Estimate the molar volume of Al2O3 at 400°C and 10 kilobars pressure.
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