In a weather forecast on a Seattle radio station the barometric pressure was reported to be 29.4 inches. What is the pressure in SI units? (1 inch = 25.4 mm, 1 atm = 760 mmHg)

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Ans() ; the burning of them contributes to global warmingthey come from decayed organic material;

According to arrhenius theory of acid and bases, an acid is a proton donor, while base donates hydroxyl ions. further, acid and base reacts to form salt and water.consider following example.hcl    +      h2o          →      cl-          +      h3o+here, hcl has donated a proton, hence it is an acid.now consider following reactionhcl      +      naoh            ↔      nacl      +        h2oin this reaction, hcl donates proton, hence it is acid. on other hand, naoh donates hydroxyl ion (i.e. hence it is a base.