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The following thermochemical data are for 25oC. ? ?H0f Cp H2O(l) - 286 kJ mole-1 + 75.3 joule mole-1 K-1 H+(aq) 0 0 OH-(aq) - 230 kJ mole-1 + 148 joule mole-1 K-1 For the self-ionization of water, H2O (l) <=> H+ (aq) + OH-- (aq) What is the value of ?H0 at 35oC
If 42.1 mL of 1.02 M sodium hydroxide, measured using a graduated cylinder, is placed in a beaker filled with 300 mL of DI water, what is the concentration of the diluted NaOH solution
among the elementary subatomic particles of physics is the muon which decays within a few nanoseconds after formation.
A piece of metal with mass of 147 g is placed in 50-mL graduated cylinder.The water level rises from 20mL to 41ml. what is the density of the metal?
At 25C the acid dissociation constant for formic acid is 6.9x10-4. Calculate DG for this reaction. R=8.31x10-3 kj/K) Can you please help me work this problem.
If 3.140g of ethanol is burned completely in a bomb calorimeter at 298.15 K, the heat produced is 92.82kJ. 1) Calculate delta H_combustion for ethanol at 298.15 K. 2) Calculate delta H_f for ethanol at 298.15 K.
the rate constant for a particular second-order reaction 0.47 m-1s-1 the initial concentration of reactant 0.25 moll
give the full symbol for the atom of ion that has 26 protons and 30 neutrons in its nucleus and 23 electrons outside its nucleus. Also give the number of the group this element is in
What do you expect will happen to the position of this equilibrium when the total pressure of the gases in the reaction mixture is doubled by injecting some argon (Ar) while maintaining the temperature constant.
Each was extracted with three 5-mL aliquots of CCl4 containing an excess of 8-hydroxyquinoline. The extracts were diluted to 25 mL and their fluorescence was measured. What is the concentration of the zinc in the unknown solution Volume of Zn sta..
Salicylic Acid is used to make asprin. Salicylic acid contains 60.8 mass % Carbon, 4.4 mass % Hydrogen and 34.8 madd % of Oxygen. What is the empirical formula for Salicylic acid?
two engineers are calculating the molecular weight of a gas mixture containing oxygen and other gases. one of them uses
Rutherford result also showed that the most of the atom's mass is located in the nucleus which has a very small volume.
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