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Miners acquire gold by soaking gold-containing ores in an aqueous solution of sodium cyanide. A extremely soluble complex ion of gold forms in the aqueous solution as a result of the redox reaction 4 Au(s) + 8 NaCN(aq) + 2 H2O(l) + O2(g) ---> 4 Na[Au(CN)2](aq) + 4 NaOH(aq) 1. What atomic species is being oxidized? 2. Explain what atomic species is being reduced? 3. Gold miners then reacts the basic aqueous product solution with Zn dust to recover the gold metal. State a balanced redox reaction for the recovery process with zinc.
Write the appropriate nuclear equation for the following description. Iodine-131, has a half-life of 8 days. If you started with a 12.0-mg sample of I-131, how much would remain after 24 days
A 0.2861 gram sample of an unknown acid (HX) needed 32.63 mL of0.1045 M NaOH for neutralization to a phenolphthalein endpoint. Explain what is the molar mass of the acid. If this unknown acid had the formula H2X
what is the PH of cocaine hydrochloride that results from neutralizing a 25mL aliquot of 0.0372M cocaine solution
discuss in detail the healthcare applications of chemical reactions. which chemical reactions would you consider to be
A 9.20-L container holds a mixture of two gases at 47 °C. The partial pressures of gas A and gas B, respectively, are 0.315 atm and 0.803 atm. If 0.180 mol of a third gas is added with no change in volume or temperature, what will the total pr..
Calculate the final temperature of the water and ice together once they have reached thermal equilibrium. The specific heat capacity of water is 4.184 J/g°C. Assume no heat is lost to the surroundings during the process
You need to load 10 ug of protein into one of the wells of a gel. This needs to be in 1x buffer and in a total volume of 15 uL. You are given a 10 ug/uL solution of protein, a 5x buffer, and water. How much of each should you mix to load the gel c..
the mass of a sample of boron atoms is 5.60 g. how many boron atoms are in this
Will B-myrcene and allo-ocimene structures not form Diels-alder adducts with maleic anhydride. explain why in each case
a question about an organic chemistry lab report. I am synthesizing aspirin (acetylsalicylic acid) using salicylic acid, acetic anhydride, and a catalyst.
Consider the electronic transition from n = 4 to n = 1 in a hydrogen atom, and select the correct statement below.
determine the volume occupied by .582 moles of a gas at 15*C if the pressure is 622 mm Hg?
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