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When heated to 150 Degree Celsius, CuSO4· 5H2O loses its water of hydration as gaseous H2O. A 2.73 g sample of the compound is placed in a sealed 4.00 L steel vessel containing dry air at 1.00 bar and 27 degree Celsius and the vessel is heated to 227 degree Celsius. What is the partial pressure of H2O (in bar)?
As the temperature continues to increase, the probabilities temperature continues to increase, the probabilities will reach a limiting value. What is this limiting value?
The radioactive decay of Tl-206 to Pb-206 has a half-life of 4.20 min. Starting with 3.70 1022 atoms of Tl-206, calculate the number of such atoms left after 38.0 min.
The resulting solution required 12.36 mL of 0.1211 M NaOH to back titrate the excess HCl. What was the percent CaCO3 in the unknown? Report your answer to two (2) decimal places
A plot of IN k vs. 1/T for a reaction gave a line with slope -3250 Kelvin. Determine the energy of activation for the reaction
A. Use Coulomb's law to calculate the ionization energy in kJ/mol of an atom composed of a proton and an electron separated by 154.00pm. B. What wavelength of light would have sufficient energy to ionize the atom
If a solution is made of naphthalene in heptane and has a vapor pressure of 82 torr, what is the mole fraction of naphthalene? Assume ideal solution behavior.
Calculate the expectation values of x and x^2 for a particle in the state n=2 in a square-well potential?
A 10.0-ml sample of house hold ammonia solution required 18.15 ml of 0.320 M HCI to reach neutralization. Calculate(a) the molar concentration of the ammonia and (b) the mass/mass percent concentration of ammonia (17.04 g/mol), given a solution de..
A reaction has a rate consant of 1.23/mol*s at 433 Celcius and 24/mol*s at 533celcius.
1-bromobutane reacts with formaldehyde. what is the product before the H30+ reacts on the product
These air conditioners are recharged from stockpiled supplies of CFC-12. If each of the 100 million automobiles contains 1.1 kg of CFC-12 and leaks 25% of its CFC-12 into the atmosphere per year, how much Cl in kilograms is added to the atmosphere..
A semipermeable membrane separates two solutions. On one side of the membrane the concentration of sodium ions is 0.87 mol/L, and on the other side the concentration of sodium ions is 2.5 mol/L.
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