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    				| 1. | Calculate the resistivity of the given material whose resistance is 2Ω; length and area of cross section are 15cm and 25cm2 respectively? | 
| Answer» Answer ❀✿°᭄★ AQUA REGIA is a mixture of nitric acid and HYDROCHLORIC acid, at a molar ratio of 1:3 optimally. Use of Aqua regia: It can dissolve noble metals such as gold and platinum but not all metals. ... It is used as an electrolyte in the Wohlwill process to REFINE gold of the highest quality (99.999%). | |