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What is the pH of pure water at 40 degrees C if the Kw at this temperature is 2.92 x 10 to the -14th?
what is the balanced molecular equation for the reaction between lithium phosphate
Calculate the molarity and mole fraction of acetone in a 1.82 molality solution of acetone in ethanol. Density of acetone is .788 g/cm^3. Density of ethanol is .789 g/cm^3. Assume that the volume of acetone and ethanol add.
If there are 0.640 g of NaCl left in a beaker that originally contained 75.0 mL of saltwater, what must have been the molar concentration of the original solution? The molar mass of NaCl is 58.44 g/mol.
the 200mm test tube also contained some water which was subsequently added to the calorimeter. considering a higher
Balance the following equation, using the smallest possible integer coefficients. Then enter the 4 coefficients in the 4 answer boxes. (Suppose the coefficients were 6, 5, 4 and 3 for the 4 substances, from left to right in the equation.
What is the enthalpy of this reaction? Assume that no heat is lost to the surroundings or to the coffee cup itself and that the specific heat of the solution is the same as that of pure water.
Calculate the cell potential at 298 K of the galvanic cell below. Assume no current draw and a perfect salt bridge. Pt(s)| Cu2+ (0.05 M), Cu+ (0.50) || Fe2+ (0.01 M), Fe3+ (0.10 M) | Pt(s)
Using the volumes of sodium thiosulfate solution you just entered and the molarity of the potassium iodate primary standard solution, calculate the molarity of the sodium thiosulfate secondary standard solution for each trial.
If 1020C of charge is passed through a solution of AgNO3(aq), calculate the number of moles of silver deposited.
what is the molecular mass nonionic solutes of 8.02 grams of solute in 861 grams of water lower the freezing point to -0.430 c.
If the ph of Rainfall in Upstate New York is Found to be 4.0, and if the acidity is half due to Nitric acid (HNO3) and half due the two Hydrogen Ions released by Sulfuric acid
What is the concentration of the chloride ion (in M) in a solution which contains 57.6 g aluminum chloride in 501 mL of solution
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