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What are the structural differences among chlorine atoms, chlorine molecules, and chloride ions? How do their properties differ?
a 0.17 mole sample of a gas is put into a balloon when the temperature is 26 degrees celsius and the pressure is 757
determine the pressure of a gas using the ideal gas law.dry ice is solid carbon dioxide. a 0.050-g sample of dry ice is
What is the empirical formula of a compound composed of 3.25% hydrogen, 19.36% Carbon, and 77.93% oxygen by mass
Consider the following reaction: HC2H3O2 (aq) + H2O (l) = H3O+ (aq) + C2H3O2- (aq) Kc=1.8*10^-5 If a solution initially contains 0.260M HC2H3O2, what is the equilibrium concentration of H3O+ at 25C
Assume that no heat is lost to the surroundings or to the coffee cup itself. Assume that the mass of the solution is equal to the mass of the water.
The question is that Iron can be determined spectrophotometrically after reaction with a ligand that results in a highly colored complex. In one determination, iron is reduced with hydroquinone to ensure it is all in Fe2+ oxidation state.
The Ka of acetic acid is 1.8 x 10-5 Using the above equation, what is the pH of this solution? What are spectator ions and what effect do they have on the pH of water
If barium needs a minimum frequency of 6.07x10^14 s-1 to eject electrons, calculate the kinetic energy of the electron emitted when barium is illuminated with a wavelength of 385 nm
A 2.721 gram sample containing an unknown amount of arsenic trichloride and the rest inerts was dissolved into a NaHCO3 and HCl aqueous solution.
Explain what is the fraction of association (α) for the subsequent potassium propionate solutions. Ignore activities. The Ka of propanoic acid is 1.34 × 10-5.
A 5.00g sample of water vapor, initially at 155C is cooled at atmospheric pressure, producing ice at -55C. Calculate the amount of heat energy lost by the water sample in this process, in kJ.
What is the percent by mass of NaHCO3 in a solution containing 70 g of NaHCO3 dissolved in 700 mL of H2O?
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