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Problem- Predict the sign of delta Ssystem for each of the following processes. Is the signe postive or negative for delta Ssystem? (a) a solid explosive converting to a gas positive negative (b) perfume vapors diffusing through a room positive negative (c) breath condensing in cold air positive negative
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When a 0.265 sample of caffeine, C8H10O2N4 , is burned, the temperature rises 1.465. Using the value 26.38 for the heat of combustion of benzoic acid, calculate the heat of combustion per mole of caffeine at constant volume.
Provide the structure of the Claisen's pruduct in the self condensation of methyl phenyl acetate.
the meta and para forms of phenylene diamine are used in the production of Kevlar and Nomex, respectively. Why is a corresponding material with similar properties not made from ortho-phynelene diamine
Draw the structures of the following amines and classify each as 1 degree, 2 degree, 3 degree, or 4 degree amine. Include Hydrogen Atoms.
Describe the development of the modern periodic table. Include contributions made by Lavoisier, Newlands, Mendeleev, and Moseley.
The radius of a gold atom is 144 pm. How many gold atoms would have to be laid side by side to span a distance of 2.63 mm?
What is the heat change in J associated with 17 g of gaseous propane at -4 oC changing to solid at -202 oC? c(propane) (g) = 2.40 J/(g.K) c(propane) (liq) = 1.65 J/(g.K) c(propane) (s) = 1.20 J/ (g.K) ?Hfus(propane) = 3.526 kJ/mol ?Hvap(propane) =..
Determine which of the following reactions are oxidation-reduction reactions and which are not. what type of reaction do you have if it is not an oxidation-reduction reaction?
an aqueous solution formed by dissolving 1.62 grams of anhydrous aluminium chloride in 50.0 grams of h2o has a freezing
Calculate the mass percent of a solution that is prepared by adding 61.3g of NaOH to 492g of H2O.
calculate that how many liters of carbon monoxide gas, measured under the same conditions, is essential?
Consider the reaction A+2B = C whose rate at 25 C was measured using three different sets of initial concentrations as listed in the following table: Trial Rate 1 0.25 0.010 7.5×10?4 2 0.25 0.020 1.5×10?3 3 0.50 0.010 3.0×10?3 Part A What is the r..
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