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A few compounds exist whose solubility decreases as the temperature increases. How would the values for ΔG, ΔH, and ΔS for these reactions be different from those values observed for the solubility of KNO3? For these compounds, would the slope of the lnKsp vs. 1/T graph be negative or positive.
The vapor pressure of dichloromethane, rm CH_2Cl_2, at 0 rm ^{circ}C is 134 rm mmHg. The normal boiling point of dichloromethane is 40. rm ^C. Calculate its molar heat of vaporization.
The student then titrates the oxalic acid solution with her sodium hydroxide solution. When the titration reaches the equivalence point, the student finds she has used 0.1265 L of sodium hydroxide solution. Calculate the molarity of the student's ..
Liquid phenol (C6H5OH) flows through a pipe with a mass flow rate of 83.0 g/s. Given that the density of phenol is 1.0576 g/cm3
Calculate the molarity of the solution. How many grams of KNO3 are needed to make 450 mL of a solution that is to contain 5.50 mg/mL of potassium ion?
Calculate the pH for each of the following cases in the titration of 50.0 mL of 0.140 M HClO(aq) with 0.140 M KOH(aq). The ionization constant for HClO can be found here.
A 15.0-g sample of a hydrocarbon is placed in a balloon at 1.00 atm and 25°C, and the volume of the balloon is 12.2 L. The hydrocarbon is 79.89% carbon and 20.11% hydrogen by mass.
A solution gave a precipitate when ammonium oxalate was added but gave no precipitate when ammonium sulfate was added. For each Magnesium group ion(Barium, Magnesium, Strontium, and Calcium) tell whether the ion
Would it be a good idea for a person to take a couple of aspirin tablets before attending a cocktail party? Explain your reasoning. This needs to be from a chemistry stand point.
The combustion of .1703 mole of hydrocarbon produces 12.27g H2O and 22.48g CO2. What is the molar mass of the hydrocarbon?
If the concentration of X is increased to 2.0 M and the concentration of Z to 3.0 M, how long should this reaction take?
where e is the magnitude of the charge on an electron and ε0 is the vacuum permittivity (a fundamental constant). What is the operator for this potential energy?
Calculate the standard potential for this cell at 25 °C. Standard reduction potentials can be found here.
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