Traditional Culture Encyclopedia - Hotel franchise - The following understanding of "mole" is correct: (a) mole is a physical quantity recommended by the international scientific community; And (b) a mole is a substance.
The following understanding of "mole" is correct: (a) mole is a physical quantity recommended by the international scientific community; And (b) a mole is a substance.
A. The quantity of matter is a physical quantity recommended by the international scientific community, and the unit is moles, so A is wrong;
B.Mol is the unit of the amount of matter, referred to as mo for short, and the symbol is mol, so b is correct;
C. The unit of molar mass is g/mol, and the molar mass of HNO 3 is 63g/mol, so c is wrong;
D. carbon atom refers to an atom with 6 protons and 6 neutrons. This option is not clear, so D is wrong.
So choose B.
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