How the sodium hydroxide can be made
Determine the following reaction: 2 Na(s) + 2 H2O(l) -------- H2(g) + 2 NaOH (aq)
ΔH= -368 kJ/mol rxn. Determine the numbers of grams of sodium hydroxide can be made if the 255 kJ of heat is released?
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The molar volume of liquid water is 0.019x10-3m3/mol, the molar enthalpy of vaporization 40.69KJ/mol, and the molar volume of steam is 30.199x10-3m3/mol, all at 100oC and 1 atm = 1.01325 bar.
What will be the equilibrium mole fraction of H2O if a mixture of 1 mol of Co and 5 mol of H2O is passed over a catalyst at this temperature and a pressure of 2 bars?
The ceiling fan with 20-inch blades rotates at 40 revolutions/minute. Determine angular speed of fan, in rad/min, and compute linear speed of tips of blades in in/min.
Even though the population standard deviation is unknown, investigator employs z rather than the more appropriate t to test a hypothesis at the .01 level of significance. In this condition the true level of significance of this test is:
Two liquids have vapor pressures. The compound A has 0.690 atm and the compound B has 0.350 atm at the room temperature. Suppose that a solution is prepared that is 0.33 mole fraction in the more volatile component.
A 12.2-g sample of NH4NO3 is dropped into a constant pressure calorimeter having 175 g of water at 23.5 degrees C. Discuss what temperature will the water reach, assuming that the calorimeter does not gain or lose any heat? Where the delta H
A tire manufacturer wants to find out whether, on average, a steel-belted radial tire gives more than 50,000 miles of wear. A random sample yields a sample mean of 53,500 and standard deviation of 5,300 miles. From the manufacturer's perspective,
The certain right triangle has hypotenuse which is 13 feet long, and one leg which is five feet long. If θ is angle opposite five-foot leg, determine values of all six trigonometric ratios for θ.
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