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When 1.00 gram of reserpine is dissolved in 25.0 grams of camphor, the freezing point depression is 26.3 degrees C. Calculate the molality of the solution and the molar mass of reserpentine.
A plot of ln[AV] versus t (s) gives a straight line with a slope of -0.32s^-1. What is the value of the rate constant (k) for this reaction?
What will be the molarity of the resulting solutions made by mixing 140 mL of 3.2 M H3PO4 with 590 mL H2O?
While Xeloda works well, it is effective for colorectal tumors and liver cancer. What are the drawbacks for extending this therapy to other types of cancer?
Calculate the molar mass (g/mol) of a gas whose root mean square speed is 796 m/s at 512 K.
Indicate the direction of polarity of each of the following covalent bonds by dragging the appropriate delta notation to each end of the bond.
The vapor pressure of pure acetone (propanone) is 266 torr. When a non-volatile solute is added, the vapor pressure of acetone above the solution falls to 232 torr. What is the mole fraction of the non-volatile solute in the solution?
How many grams of Al are required to completely react with 50.0 g of O2?
A 100.0 mL of 10.0 mM phosphate buffer, pH 7.5 (pka2 = 7.2). You are provided with 0.200 M KOH and 0.100 M KH2PO4 solutions, Calculate volume of KOH and KH2PO4 solutions
A particular brand of gasoline has a density of 0.737 at 25C . How many grams of this gasoline would fill a 13.3 tank?
What is the molality of CrCl3 in a solution prepared by dissolving 75.2 g chromium(III) chloride hexahydrate in 250.0 g of water.
A titration is performed in which 50.0 mL of 0.0463 M acetic acid (Ka = 1.8*10^-5) is titrated with 0.1000 M NaOH. Calculate the pH at the beginning of the titration
Calculate the mass of methane that must be burned to provide enough heat to convert 128.0 g of water at 36.0°C into steam at 103.0°C. (Assume that the H2O produced in the combustion reaction is steam rather than liquid water.)
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