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The addition of 6 g of salt to a sample of pure water causes its freezing point to be reduced from 0°C to -1.5°C. After an additional amount of salt is dissolved in the solution, its freezing point is -4.5°C. What is the total amount of salt dissolved in the sample of water?
Calculate the freezing point of a solution that contains 8.0 g of sucrose (C12H22O11) in 100. g of H2O. Kf for H2O = 1.86
Calculate for each of the following solutions, and indicate whether the solution is acidic, basic, or neutral. A. OH ? ]= 3.5×10?4M. Express your answer using two significant figures
a helium-filled weather balloon is launched from the ground where the pressure is 752 mmHg and the temperature is 21 degrees celsius. under these conditions its volume is 75.0 L.
A gas is confined to a container with a massless piston at the top.A massless wire is attached to the piston. When an external pressure of 2.00 rm atm is applied to the wire, the gas compresses from 5.90 to 2.95 L. When the external pressure is in..
The energy required to break a single carbon-carbon bond is 348 kJ/mol. Calculate the minimum wavelength of light needed to break the C-C bond. Could UV lamps be used to break the C-C bond?
portion of the stock solution and dilute it to a total volume of 0.550L what will be the concentration of the final solution?
the heat calculated after a calimetry experiment is equal to the enthalpy change for reaction. Use the thermochemical data to calculate the enthalpy chanfe for the reaction of NaOH and CH3COOH.
What will be the molarity of the resulting solutions made by mixing 140 mL of 3.2 M H3PO4 with 590 mL H2O?
How many grams of thallium may be formed by the passage of 57.5 amps for 1.34 hours through an electrolytic cell that contains a molten
the mechanism involved in the distillation of a mixture containing acetone and ethanol
The amount of heat needed to raise the temperature of 25 g of a substance by 15°C is 915 J. What is the specific heat of the substance?
A saturated gaseous organic molecule is formed by replacing all hydrogen atoms with an unknown combination of F, and Cl atoms. The percent mass of Cl in the organic compound
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