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We will be performing a lab regarding the constant current coulometry titration of Aresenic. The question is, define why do we generate I2 electrochemically in situ rather than by weighing it or relying on quantitative volumetric delivery?
what is the significance of a limiting reactant. discuss how it is found and what it tells us about the amount of
A dioxin-contaminated water source contains 0.081% dioxin by mass. How much dioxin is present in 4.2 L of this water (Assume that the density of the solution is 1.01 g/mL.)
how would you prepare pentanenitrile from butanoic acid? show the reaction steps indicating the appropriate reagents
A certain substance has a heat of vaporization of 46.01 kJ/mol. At what Kelvin temperature will the vapor pressure be 3.50 times higher than it was at 351 K
What is the effect on the calculated concentration of the standard solution if the trials of the pure KHP samples are consistently over-titrated to a deeper magenta color?
Calculate the amount of heat energy in each of the following: A) calories removed to condense 125g of steam at 100 degrees celsius and to cool the liquid to 15 degrees celsius
what is the concentration in the solution of the first ion when the second one starts to precipitate at 25 C?
The annual income is less the operating expense is expected to be $50,000. Annual interest is 6 percent compounded annually. When is the most favorable time to replace the machinery. Compute the present worth of the profit if the machinery is replace..
If 1.35 g of silver nitrate is dissolved in 115mL of water, and to this solution is added 5.00 mL of 1.45M hydrochloric acid resulting in the formation of a precipitant. Find the concentration of silver ions remaining in solution.
A titration was performed at 25 degrees C and the Ksp of a slighlty soluble salt was determined to be 1.5×10-4. Calculate the standard Gibbs Free Energy of this salt. R = 8.314 J/mol-K
when answering include an explanation balanced chemical equations andor calculations where appropriate.in a acid-base
How much heat is released when 4.50 g of methane gas is burned in a constant-pressure system? CH4 (g) + 2O2(g) -> CO2 (g) + 2H2O(l) H=-890kJ
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