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A solution of 2.43 grams of the unknown hydrocarbon dissolved in 26.7 grams of naphthalene is found to freeze initially at 76.2oC. Calculate the apparent molecular weight of the unknown hydrocarbon on the basis of the freezing-point depression experiment.
A1.15 g sample of dry ice is added to a 765 mL flask containing nitrogen gas at a temperature of 25.0 C and a pressure of 715 mm Hg.
how many joules of heat are needed to raise the temperature of 591 grams of water from 25C to 55C?
triethylene glycol and heavy mineral oil are both high boiling, and high molecule solvents. What in their structural properties renders triethylene glycol
Calculate the molarity of 500.0 cm3 of solution containing 18.5 g of calcium nitrate Ca(NO3)2
The equilibrium constant, Kp , for the reaction CO(g) + H2O(g)-> CO2(g) + H2(g) at 986°C is 0.63. A rigid cylinder at that temperature contains 1.2 atm of carbon monoxide, 0.20 atm of water vapor
Calculate the change in entropy (in J/K) for the following reaction at 298 K: C(s) + H2O(g) ? CO(g) + H2(g) Use entropy for graphite (diamond is too expensive).
would a given amount of flourine react with different masses of the two hydrogen isotopes? Does this violate the law of definite proportions.
Given the tabulated data, what is the lattice energy of crystalline calcium chloride?
A metal object with a mass of 19 g is heated to 96 degree celcious, then transferred to a calorimeter containing 75 g of water at 18 degree celcious
If a triacylglycerol in peanut oil that contains one oleic acid and two linoleic acids is completely hydrogenated, draw the condensed structural formula for the product.
Determine the percent by mass of calcium carbonate in the sample
The distribution coefficient, K= conc. in ligroin/conc. in water, between ligroin and water for solute A is 7.5. what weight of A would be removed from a solution of 10g of A in 100 mL of water.
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