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1. How many ATOMS of xenon are present in 3.25 moles of xenon trioxide?
2. How many MOLES of oxygen are present in 9.37E+22 molecules of xenon trioxide?
At what concentration does hydrocyanic acid (ka= 4.9 x 10^-10) exhibit 0.05 percent ionization? Assume the temperature to be 25*C
Under what circumstances with regards to degrees of no polar characters are frenkel and schottky defects likely?
Chlorine trifluoride is used in processing nuclear reactor fuel. It has a vapor pressure of 29.1 torr at -47.0°C and its heat of vaporization is 30.61 kJ/mol.
HFC's (hydrofluorocarbons) are replacing CFC's (chlorofluorocarbons) because the C-H and C-F bonds are stronger than C-Cl bonds. If the bond enthalpy of a C-F bond is 482 kJ/mol.
The phosphorous anion (P-) has how many total electrons and how many valence electrons?
What is the minimal external voltage one must supply in order to perform the electrolysis of molten CaCl2. Suggest a means for supplying this energy.
If the laser is pointed toward a pinhole with a diameter of 1.0 mm, how many photons will travel through the pinhole per second? Assume that the light intensity is equally distributed throughout the entire cross-sectional area of the beam. (1 W = ..
estimate the enthalpy change for the reaction between 1 mol c2h5oh as liquid ethanol, a fuel made by fermenting corn, and o2 to yield co2 and h2o under standard conditions by using bond enthalpies,
Calculate the cell potential after the reaction has operated long enough for the [Al3+] to have changed by 0.32 mol/L. (Assume T = 25°C.)
The organic compound di-n-butyl phthalate, C16H22O4(l), is sometimes used as a low-density (1.046 g·mL-1) manometer fluid. Compute the pressure (in torr) of a gas that supports a 455-mm column of di-n-butyl phthalate. The density of mercury is 13...
Acid catalyzed hydration of 3-hexene gives only one alcohol with the molecular formula C6H14O. A) Draw the structure of 3-hexene.
An experiment requires 44.0 g of ethylene glycol, a liquid whose density is 1.114 g/mL. Rather than weigh the sample on a balance, a chemist chooses to dispense the liquid using a graduated cylinder. What volume of the liquid should he use?
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