The chemical quantity represented by each letter in chemistry Just as M is the mass and N is the quantity of matter Please do it in 26 letter order,

Symbol name unit
M mass G
The amount of substance n mol n = m / M
Na Avogadro constant Na specific value is 6.02 * 10 ^ 23 n = n * Na n is the number of particles
M molar mass g / mol
The molar volume of VM gas is L / mol, only when VM = 22.4l/mol, n = V / VM, V is the gas volume
The concentration of substance C is mol / L, C = n / V, V is the volume of solution
The most important thing is to read more books. They are all theoretical things. Just understand them, and pay special attention to the conversion of units

If the amount of stoichiometry in front of the chemical symbol is greater than 1, what can the symbol only mean

It can only express microcosmic meaning: several molecules, atoms or ions

The instrument for measuring the voltage at both ends of a circuit is called. There is a letter on its dial. The symbol of the voltmeter in the circuit diagram is

The special symbol pattern should be composed of English letters and symbols
It's the one in front of the note's name, which is obviously good-looking in the group, such as' o nly べ '

When the input method is "Sogou Chinese input", you can press these three keys at the same time. Crtl shift Z will bring out a series of symbols. You can find them in it,:)

The chemical quantity represented by each letter in chemistry Just as M is the mass and N is the quantity of matter Please do it in 26 letter order,