Please answer the following questions: (1) the use of waste oil to produce biodiesel benefit human beings. Biodiesel as fuel to produce carbon dioxide and water after combustion, biologicalPlease answer the following questions:(1) biodiesel production for the benefit of mankind using drainage oil. Biodiesel as fuel combustion produces carbon dioxide and water, biodiesel must contain two elements ______, may contain ______ elements.(2) the market salt rich varieties, with salt, zinc salt, calcium salt, iodine, selenium salt. Salt containing zinc, calcium, selenium, usually refers to the ______, the main component of sodium chloride salt is formed. By ______ (fill: "molecules", "atomic", "ion" and "element" or "pure").
Because the element is the same as the total number of atoms with the same charge, so salt contains iodine, zinc, calcium, selenium and so on, usually refers to elements, sodium chloride is a salt is composed of sodium ions and chloride ions;The results are as follows: (1) C, H; O; (2) element; ion
So biodiesel as fuel combustion produces carbon dioxide and water that biodiesel must contain two elements carbon, hydrogen, the burning need oxygen to participate in, so biodiesel is contained in the oxygen element cannot be determined
Because of the chemical reaction before and after the elements of the same species
