<u>Answer:</u>
1- Ba(ClO3)2(s) ----> BaCl2(s) +3O2(g) -Redox
2- 2NaCl(aq) +K2S(aq) ----> Na2S(aq) + 2KCl(aq) - None of the above
3- CaO(s) + CO2(g) ------> CaCO3(s) -None of the above
4- KOH(aq)+ AgNO3(aq) -----> KNO3(aq) + AgOH(s) - Precipitation
5- Ba(OH)2(aq) + 2HNO2(aq) -----> Ba(NO2)2(aq) +2H2O(l) -Neutralization.
<u>Explanation;</u>
1) Redox, because it involves bith reduction and oxidation
2) I suppose would be "none of the above" for this chemical reaction, from the choices given.
3) It is a synthesis reaction, thus the correct answer should be "none of the above" from the asker's choices.
4) It is a precipitation reaction, also called double decomposition reaction where two soluble salts react to form an insoluble salt and a soluble salt.
5) It is acid-base neutralization, as such reactions form both a salt and water.
We need to discuss about reduction of possible environmental damage associated with uranium mining.
There are several extraction processes involved in mining uranium as- (i) surface mining, (ii) heap leaching, (iii) underground mining and so on.
There are so many risks involved towards environment and health.
There are some improvements for long term stabilization of Uranium mining have been documented. They are as follows-back-filling and using residues for the construction of motorways, washing of soil with water, carbon treatment inclusion of new materials like room temperature ceramics for the immobilization of various contaminants, de-watering, and land encapsulation.
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