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Aqueous ammonia solutions are weak bases. They are obtained by bubbling ammonia gas in water. If 845 mL of gas at 1.00 atm pressure and 27 degrees Celsius is bubbled into 4.32 L of water, what is the molarity of the resulting solution? Assume the solution to have a final volume of 4.32 L.
You have a mixture containing the following pairs of compunds as solid. which of the following reagents could you use to separate the two compunds from each other
The vapor pressure of pure acetone (propanone) is 266 torr. When a non-volatile solute is added, the vapor pressure of acetone above the solution falls to 232 torr. What is the mole fraction of acetone in the solution?
In fractional distillation and steam distillation, we used tap water. What would happen if you inversed the water in and water out of the condenser
How many milliliters of 0.125 M HCl are needed to completely neutralize 48.0mL of 0.102 M Ba(OH)2 solution? How many milliliters of 0.122 M H2SO4 are needed to neutralize 0.210g of NaOH?
How many molecules of carbon dioxide are produced when 149 molecules of acetylene (HCCH) to react in excess oxygen produce carbon dioxide and water?
A skyscraper in Pittsburg, built in the early 1970's, is supported by water filled columns. Potassium carbonate was added to the water to precent freezing during cold weather. If the solution is 40.0% K2CO3 by mass, what is the predicted freezing ..
Using electronegativity arguments, classify the following diatomic molecules as nonpolar (N), polar (P), or ionic (I). (Use the drop down menus to choose your answers
The heat of fusion, ?Hfus, of ethanol (C2H5OH) is 4.9 kJ/mol. The heat of sublimation of ethanol, for the process C2H5OH(s) ? C2H5OH(g) , is 43.5 kJ/mol. What is the heat of vaporization of ethanol?
Suppose a reaction has a standard Gibbs-free energy of -0.707 kJ/mol, calculate the relative ratio of product to reactant.
conversion of 0.95g of liquid water to steam at 100 clesius requires 2.1 kJ of heat. calculate the molar enthalpy of evaporation of water at 100 celsius
Calculate the difference in the ionization energies for 1H and 4He atoms. This result allows you to compare the effect on the ionization energy of changing the nuclear charge
1) Use Coulomb's law to calculate the ionization energy in kJ/mol of an atom composed of a proton and an electron separated by 166.00pm 2) What wavelength of light would have sufficient energy to ionize the atom
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