Goodbye privacy, hello 'Alexa': Amazon Echo, the home robot who hears it all. We had Rory Carroll invite âAlexaâ aka the Echo into his home. There was helpful cooking assistance, endless facts and figures, an amusing misunderstanding â and concerns over what exactly Amazon does with all that interaction data. Rory Carroll in Los Angeles.
Aqua regia or Royal water can dissolve metals. It is a mixture of conc.nitric acid and conc.hcl in the ratio of 1:3. Remember none of the above mentioned acids will dissolve the metals in the absence of other. adhi Â· 9 years ago.
Mix several drops of dishwashing liquid into a bucket of hot water. The dish soap assists in breaking up the soot and removing it from the metal. Dip a scrubbing sponge into the soapy water and scrape it back and forth over the soot deposits. This breaks off the majority of the soot from the metallic surface.Spray any remaining soot deposits with a combination of warm water and white vinegar mixed in a spray bottle in a half-and-half solution.White vinegar is slightly acidic and this helps break up the soot and cleans the metal effectively. Run a nylon scrub brush against any stubborn soot to remove it from the metal.Avoid using a metal scrub brush since this can result in scratching. Buff the metal with a damp rag to remove any remaining soap or vinegar and then dry it with a dry rag.ix several drops of dishwashing liquid into a bucket of hot water. The dish soap assists in breaking up the soot and removing it from the metal. Dip a scrubbing sponge into the soapy water and scrape it back and forth over the soot deposits. This breaks off the majority of the soot from the metallic surface.