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Barium sulfate, BaSO4, is so insoluble that it can be swallowed without significant danger, even though Ba2+ ions are toxic. At 25 °C, 1.00 L of water dissolves only 0.00245 g BaSO4. Calculate Ksp for BaSO4.
Gaseous methane will react with gaseous oxygen to produce gaseous carbon dioxide and gaseous water . Suppose 0.48 g of methane is mixed with 1.13 g of oxygen. CH4+2O2 = CO2 + 2H2O
The isotope 22Na has a half life of 2.60 years. How much of a 1.00 gram sample would be left after 1.00 yr
if the amount of hg in an industrial-waste pond is 0.39 micrograms ugml how much hg is present in kg if the pond has a
Use the data to compute the amount of energy released in kilojoules per milliliter from the combustion of cooking fat
You are going to a birthday party and you want to give the children balloons filled with He gas. How many balloons can you fill to a volume of 2 liters if the internal gas pressure of the tank
When 6.6 g solid NaOH is dissolved in 30.0 g of water in a coffee cup calorimeter, the temperature rises from 25.5 to 36.1. How much heat is produced by the dissolution process? the specific heat is 4.184
A flask is filled with vapor by boiling a volatile unknown liquid in the foil covered flask. As it boils away, the vapor of the unknown pushes the air out of the flask through a tiny pinhole opening and eventually the flask is filled with an atmos..
the enthalpy of formation of ethanol c2h5oh is -277.o kjmol at 298.15k. calculate the enthalpy of combustion of one
Determine how much heat is evolved or absorbed when 30.0 of lithium iodide completely dissolves in water.
if you prepare a 1.00 solution of beginning with water at 27.5 what is the final temperature of the solution in ?
Octane ratings are assigned to gasoline mixtures based on their ability to prevent knocking relative to isooctane. Estimate the energy released during the combustion of 1.00 mol of pure isooctane.
Which of the following has a dipole moment. A) CO2 B) BCl3 C) BrF3 D) more than one of these E) none of these
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