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What determines whether two substances are likely to be miscible with each other, in terms of thermodynamic and intermolecular forces?
How many grams of silver chloride will be produced if 216 grams of silver is allowed to react with an unlimited amount of chlorine?
If 80 {rm J} of heat are added to a pure gold coin with a mass of 13 {rm g}, what is its temperature change? Specific heat capacity of gold is 0.128 rm J/g ^circ C.
What is the pH of a buffer prepared by adding 0.45 mol of the waek acid HA to 0.608 mol of NaA in 2.00 L of solution? The dissociation constant Ka of HA is 5.66e-7
150.g of NaCl completely dissolves (producing Na+ and Cl- ions) in 1.00k of water at 25.0C. The vapor pressure of pure water at this temperature is 23.9torr.
A 0.150- M solution of chloroacetic acid (HC2H2ClO2) has a pH of 1.86. What is the value of Ka for this acid and the percent ionization?
1) Many household cleaning products contain oxalic acid H2C2O4, , a diprotic acid with the following dissociation constants: Ka1=5.9E-2 and Ka2=6.4E-5 Calculate the equilibrium concentration of C2O4^2- in a 0.20 M solution of oxalic acid
The precipitate formed was washed and dried .Its mass was 0.287g.Find the mass of NaCl in the initial sample.
Express your answer numerically in calories using two significant figures.
A particular Lake contains 10^10 liter of water. Due to acidification, the pH of the Lake is 5.00. It has been decided to add enough calcium carbonate to the lake to bring the pH to 6.00.
For the reaction: H2+ClO2 = 2 HOCl; K=0.0900; what us the concentration of (HOCl), at equilibrium if 0.0230 mol of H2 and 0.0230 mol of ClO2
It only contains only C,H, and O. A 116mg sample was treated with an excess of methylmagnesium bromide, producing 48.7ml of methane gas at 20 degrees C and 750mm Hg.
What is the identity of the precipitate and what is the change in enthalpy of the reaction per mole of copper? Assume the calorimeter absorbs negligible quantity of heat and the specific heat and density of the solution are that as pure water.
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