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A solution of h2so4 with a molal concentration of 6.80 has a density of 1.318 g/ml. What is the molar concentration?
Calculate the pH and the concentration of the other species in a 0.0200-M aqueous solution of C6H5COOH (aq)
if the total amount of energy emitted by a carbon sample is 1.98x10^5 J, determine the number of carbon atoms present in the sample, assuming that each atom emits one photon
At 40°C, the vapor pressure of heptane is 92 torr. If a solution is made of naphthalene in heptane and has a vapor pressure of 82 torr, what is the mole fraction of naphthalene? Assume ideal solution behavior.
Calculate the pH of a solution prepared by dissolving 0.15 of sodium benzoate and 0.3 of benzoic acid in water sufficient to yield 1L of solution.
What is the minimal external voltage one must supply in order to perform the electrolysis of molten CaCl2. Suggest a means for supplying this energy.
Calculate the theoretical yield of C2H5Cl when 123g of C2H6 reacts with 213g of Cl2 , assuming that C2H6 and Cl2 react only to form C2H5Cl and HCl.
A reaction takes place inside a constant pressure calorimeter. The heat absorbed by the calorimeter is measured to be +15J.
The pressure of the gas is 365 torr, and the temperature is 45, ^{\circ}C. If the temperature changes to 60\, ^{\circ}C with no change in volume or amount of gas, what is the new pressure, P_2, of the gas inside the container
The volume the vapor occupies is 300 mL and the pressure of the vapor is 400 torr. The piston is then moved so that the vapor occupies 600 mL, and the system is allowed to come to equilibrium at 28 C. What is the final pressure of the CS2 in the v..
The volume of oxygen used was 747.0 milliliters at 1,092 K and12.00 atm pressure, Calculate the percentage by weight of graphitein the original mixture.
Based on the stoichiometry, at what point does the limiting reactant change? show calculations to support your answer. The volume of acid HCL (10mL) is constant and mass of metal Mg (0.250g) is constant.
a buffer solution is prepred by adding 5.50g of ammonium chloride and 0.0188 mol of ammonia to enough water to make 155mL of solution a) What is the pH of the buffer
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