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For a particular reaction, ?H° is -13.9 kJ and ?S is -41.6 J/K. Assuming these values change very little with temperature, over what temperature range is the reaction spontaneous in the forward direction?
When solid ammonium chloride, NH4Cl, is added to excess water, a solution forms and the temperature of the system decreases. In a certain experiment, 0.10 mole of NH4Cl is added to a liter of water in an open glass beaker at 298 K
a certain mass of oxygen was collected over water when potassium chlorate was decomposed by heating. the volume of the
An understanding of Le Chatelier's principle is fundemental to the study of chemistry and helps us to understand everyday situations.
The tank is first evacuated, and then it is connected to a 50.0 L cylinder of compressed nitrogen gas. The gas pressure in the cylinder, originally at 21.5 atm, falls to 1.55 atm without a change in temperature. What is the volume of the tank?
Calculate the molarity of an NaOh solution if 32.6 ml of this solution is required to neutralize 0.854g of potassium hydrogen phathalate. the molecular weight of potassium hydrogen phathalate is 204.277g/mol
what is the freezing point of an cyclohexane solution that boils at 81.27 degrees c? normal freezing point is 6.5 and
Evaluate the efficiency for a compression ratio of 10:1. Assume that, in state A, V = 4.00 dm3, p = 1.00 atm, andT = 300 K, that VA = 10VB , pc /pb = 5, and that Cpm = 7/2 R
the molecule 2,2-dimethylheptane, draw Newman projections of the most and least stable forms of 2,2-dimethylheptane, viewing doen the C3-C4 bond, label th energy vs conformation angle diagram
what quantity of heat is required to vaporize 107g of benzene, c6h6, at its boiling point, 80.1c? the heat of vaporization is +30.8kj/mol.
Write a balanced equation to show the polymerisation of the molecule CF2CF2. Show two repeat units of the polymer.
a gas mixture contains 5.6 g of N2, 1.4g of h2, and 27.6 of CH4. What is the mole fraction of h2 in the mixture
The decay rate for carbon 14 in the sample is 14.2 dis/min per graham carbon. In what year was the coffin most likely made? ( Assume the half life of carbon-14 is 5730 years and that the decay rate for carbon 14 in living organisms is 15 dis/min p..
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