Current location - Recipe Complete Network - Catering franchise - (2007? In order to keep the color, fragrance, taste and taste of food for a long time, people often add chemical preservatives to food or food packaging.
(2007? In order to keep the color, fragrance, taste and taste of food for a long time, people often add chemical preservatives to food or food packaging.
According to the chemical formula of benzoic acid, C6H5COOH, what is the atomic number ratio of elements C, H and O in benzoic acid? 7:6:2;

The mass ratio of C and H elements is (12× 7): (1× 6) =14:1;

The relative molecular weight is the sum of the masses of atoms that make up the molecule, and the relative molecular weight of C6H5COOH is12× 7+1× 6+16× 2 =122;

So the answer is: 7: 6: 2; 14: 1; ? 122.

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