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A certain solvent has a normal freezing point of 1.72 ° C, and a freezing point depression constant of 5.07 ° C/m. What is the molality of a solution in this solvent that has a freezing point of 4.70 ° C?
From data below, calculate the total heat (in J) associated with the conversion of 0.412 mol ethanol gas (C2H6O) at 501°C and 1 atm to liquid ethanol at 25.0°C and 1 atm
Find the volume of a molar solution and What volume of a 2.00 molar solution of sulfuric acid, H 2 SO 4 , is required to react with 250.0g of magnesium carbonate, MgCO 3 , according to the following equation?
what is the order of increasing steric hindrance within these reactions and what is the reason for that order in terms of calculated energies, distance, and structures.
AgBr is the light-sensitive compound in most photographic films. Assume, when film is exposed, that the light energy absorbed dissociates the molecule into atoms.
A solution is prepared by mixing 52.0 g glucose (C6H12O6) with 510.0 g water. What is the vapor pressure of this solution at 25°C
A pound of coffee beans yields 70 cups of coffee (4 cups = 1 qt). How many milliliters of coffee can be obtained from 1.0 g of coffee beans.
A piston has an external pressure of 13.00 atm. How much work has been done if the cylinder goes from a volume of 0.160 liters to 0.540 liters.
A 125.0g sample of copper is initially at 25.0oC. It absorbs 12.50 kJ heat from its surroundings. What is the final temperature to the nearest tenth degree? Specific heat copper = 0.3874 J/goC.
what is the freezing point(Degrees C) of a solution prepared by dissolving 11.3g of Ca(NO3)2 ( formula weight= 164g/mol) in 115g of water?
The ionization constant, Ka, for HOI(aq), hypoiodous acid, is 2.3 × 10-11. What is the pH of a 0.050 molar solution of sodium hypoiodite, which contains the hypoiodite ion?
A sample of MgCl2 is known to be contaminated with NaCl. A 3.47-g portion of the sample is dissolved in water and treated with an excess of AgNO3 solution.
Assuming no energy is transferred to or from the surroundings, calculate the final temperature of the water after all the ice melts. Heat capacity of H2O(s) 37.7 J/(mol X K) Heat capacity of H2O(l) 75.3 J/(mol X K) Enthalpy of fusion H2O 6.01 KJ/m..
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