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A solution is made by dissolving 25.7 g of NaOH in approximately 450 mL of water in a volumetric flask. The solution becomes quite warm, but after it is allowed to return to room temperature, water is added to total 500 mL of solution. Calculate the pH of the final solution. Report pH to 2 decimal places.
Given stock solutions of glucose (1M), aparagine (100 mM) and NaH2PO4 (50 mM), how much of each solution do you need to prepare 500 mL of a reagent that contains 0.05 M glucose
what is the molar solubility of caf2 in 0.10 m naf solution at 25°c? the ksp for caf2 is 1.5 x 10^-10
degrees celsius was added to an insulated vessel containing 50.0 g ice and 25.0 g water at 0 degrees celsius. What mass of liquid water is present in the vessel at the end?
A 4.50-g sample of LIL at 25.oC dissolves in 25.0 mL of water also at 25.0C. The final equilibrium temperature of the resulting solution is 60.8C. What is the enthalp of solution of LICL expressed in kilojoules per mole?
An empty aerosol can at 25 degree celcius still contains gas at 1.00 atmosphere pressure. If an empty can is thrown into a 488.2 degree celcius fire, what is is the final pressur in the heated can.
Assuming that the outdoor formaldehyde concentration is neglible, calculate the steady-state concentration in the air inside the room. Does the concentration exceed the concentration (100 ppbv) considered to be the level of concern?
sample of fertilizer by the procedure of this experiment and obtain 1.000g of MgNH4PO4 * 6H20. Calculate the equivalent mass of P2O5 initially in the sample.
Which of the following substances would be expected to be the most soluble in CCl4? Answer with explanation as to why. a)NH3
If an intravenous solution containing 123 mg of a drug substance in each 250-mL bottle is to be administered at the rate of 200mcg of drug per minute,how many milliliters of the solution
Calculate the mass of silver chloride required to plate 225 mg of pure silver.
to what pressure should you fill the acetylene tank to ensure that you run out of each gas at the same time? Assume ideal behavior for all gases.
The reaction A->B follows first-order kinetics with a half-life of 21.7 hours. If the concentration of A is 0.023 M after 48 hours, what is the initial concentration of A?
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