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How many electrons, protons, and neutrons respectively are in the iron(III) ion, Iron- 56 with a 3+ charge?
26, 26, 5626, 26, 2626, 26, 3023, 26, 3029, 26, 30
What are its values of DeltaG of vaporizatoin and DeltaS of vaporization at 61 degrees Celsius?
The hardness of a water sample is known to be 500 ppm? CaCO3. In an analysis of a 50 mL water sample, what volume of 0.0100 M Na2H2Y is needed to reach the endpoint
What is the H3O+ concentration and the pH for a 0.001M HCl solution in one liter of a 0.01M CaCl2 solution. Solution is ideal. Real solution using DH Limiting Law
What is the hydronium-ion concentration in a 0.025 M solution of carbonic acid, H2CO3? For carbonic acid,
write the expression for the equilibrium constant kc for the following chemical reaction?4h3oaq 2cl-aq mno2s mn2aq
What is the molar concentration of the excess reactant once this reaction has finished? (40%)
Find the pH and volume (mL) of 0.0372 M NaOH needed to reach the equivalence point in titrations of (a) 42.2 ml of 0.0520 M CH3COOH
Determine the change in internal energy of the gas express your Answer in units of kJ and operates for nine minutes to heat the gas in a cylinder
What are the p, V, and T values of the final state of the same perfect gas after an adiabatic expansion to a final pressure of 0.100bar that follows the gas law: PV^(5/3)=constant
When 0.78 g of an unknown gas in contained solely in a 560 mL container, the pressure is 780 Torr at 5 degrees Celcius. What is the molar mass of the gas in grams/mole?
A mixture of NaCl and NaBr has a mass of 2.08g and is found to contain 0.78 of Na.What is the Mass of NaBr in the mixture.
Consider titrating 15.0ml of a .245M solution of hydazine, H2NNH2, with a .453M HCl solution. The Kb value for hydrazine is 1.3x10^-6 b) what volume of HCl needs to be added to the solution in oder to have a bffer system with the maximum capacity ..
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