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A solution containing sulfide ions is added to selectively precipitate one of the metal ions from solution. At what concentration of sulfide ion will a precipitate begin to form? What is the identity of the precipitate? Ksp(CuS)= 1.4 x 10^-36, Ksp(FeS)= 6.3 x 10^-18. Explain the rationale for your answer.0^-36, Ksp(FeS)= 6.3 x 10^-18. Explain the rationale for your answer.
A gas sample has an original volume of 700 ml when collected at 750 mm and 25°C. What will be the volume of the gas sample if the pressure increases to 810 mm and the temperature increases to 30°C?
Using appendix C compare entropies at 25 degrees C for the following pairs of substances. For each pair, explain the difference in the entropy values.
What are the masses in kg of solution A and solution B required, to make 100 kg of a mixture containing 25% ethyl alcohol by mass
If the volume of 0.200 M NaOH needed to neutralize 0.410 g of an unknown acid is 35.0 mL, what is the molar mass of the monoprotic acid
When 24 mL of a 190 mL stock solution containing 1.8 M BaF2 is diluted to 78 mL, what is the concentration of Ba2+ in the new solution?
The Ksp for silver cyanide is 1.2x10^-8, the Ksp for zinc cyanide is 8.0x10^-12, and the Ksp for aluminum cyanide is 2.3x10^-21. What is the minimum cyanide concentration needed to precipitate each condition
show the total ionic and net ionic forms of the following equation. make sure the equation is balanced before proceeding. Fe(s) + CuSO4(aq)
A certain copper ore contains 2.34% of Cu2S by mass, and the remainder of the ore contains no copper. In a particular year, a single open-air smelt furnace heated 26000 tons of this ore.
How many grams of sodium sulfide are formed if 1.60 g of hydrogen sulfide is bubbled into a solution containing 2.13 g of sodium hydroxide, assuming that the sodium sulfide is made in 94.0 % yield?
Explain why neither triphenylmethanol, (C6H5)3COH, nor benzophenone, C6H5COCH5, was produced in the reaction between C6H5MgBr and CO2
If 0.00936 mol neon gas at a particular temperature and pressure occupies a volume of 210. mL, what volume would 0.00793 mol neon occupy under the same conditions? What mass of neon gas is required to fill a 4.44-L container to a pressure of 1.30 a..
The statements in the following multiple choices deal with the concept of equilibrium. Choose the statement which is true. a) At equilibrium the speed of a reaction equals its rate constant.
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