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A Chem 113 TA prepares a solution by dissolving 3.11 g of solid KOH in enough water to make 100.0 mL of solution. Calculate the molarity of K+ ions in this solution.
equilibrium constant, Kp, for the reaction = 0.295 (at 400 degrees C.)then write the kp of the reaction and Calculate kc at 400 degree Celsius.
A 1.000 g sample of a compound containing C, H and O is burned in excess oxygen, producing 1.783 g CO2 and 0.734 g H2O. Determine the empirical formula of the compound.
What is the compounds molar mass if the density of a gaseous compound of phosphorous is 0.943g/L at 474K when its pressure is 728 torr.?
How many grams of nickel nitrate, Ni(NO3)2, must be dissolved to prepare 200 mL of a 0.152 M aqueous solution of the salt.
Determine the precipitate that forms if silver nitrate aqueous solutions and KCl react to produce products in a double-replacement reaction.
The half-life of 137Ce is 30 years. How many grams of 137Ce must be produced now to have a sample containing 32 g of 137Ce 190 years from now?Answer in units of g
The combustion of butane produces heat according to the equation 2C4H10(g) + 13O2(g) -> 8CO2(g) + 10H2O(l) ->H°rxn = -5,314 kJ/mol What is the heat of combustion per gram of butane
Suppose you have a sample of sodium weighing 11.62 g. How many atoms of sodium are present in the sample?
The equilibrium constant Kp for the reaction ; CCl4(g) C(s) + 2Cl2(g) at 700 celcius is 0.76 atm. Determine the initial pressure of carbon tetrachloride
Will a precipitate of magnesium flouride form when 200.0 milliliter of 1.9x10^-3mol/Litre MgClsubnumber2 solution is added to 300.0 milliliter of 1.4x10^-2mol/Litre NaFsolution?
Sketch Flow diagram and explain the extraction process - What is the purpose of extracting the organic layer with water in the first extraction step?
Write balanced chemical equations for the following reactions.
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