The relationship between Moore and Avogadro constant For Moore, I am very vague about his concept and its relation to Avogadro's constant Avogadro's constant seems to be in U. 1U = 1.6605402 x 10 (- 27) power And the mole is 6.02 x 10 (to the 23rd power), what does it matter? The mass of a C12 atom is 12U, and the molar mass of a C12 atom is 12g. Why is it the same? And the unit of u is kg, mole 6.02 x 10 (23rd power) g, isn't the unit different? Please help me So I want to ask, is u the mass of the atom? How much does he weigh? And mole represents how many atoms he has... In it. So, for example, C12 has 12U and 12mol. Are they the same?

The relationship between Moore and Avogadro constant For Moore, I am very vague about his concept and its relation to Avogadro's constant Avogadro's constant seems to be in U. 1U = 1.6605402 x 10 (- 27) power And the mole is 6.02 x 10 (to the 23rd power), what does it matter? The mass of a C12 atom is 12U, and the molar mass of a C12 atom is 12g. Why is it the same? And the unit of u is kg, mole 6.02 x 10 (23rd power) g, isn't the unit different? Please help me So I want to ask, is u the mass of the atom? How much does he weigh? And mole represents how many atoms he has... In it. So, for example, C12 has 12U and 12mol. Are they the same?

(1) About the unit of atomic mass u
A unit of atomic mass, the symbol of which is "U", and its numerical value
It is about "1.6605655 * 10 ^ - 27kg", which is equal to one
It is 1 / 12 of the atomic mass of C-12 nuclide
(2) On Moore and Avogadro constants
Mole is the amount of matter in a system, the basis contained in the system
The number of this unit is equal to that of 0.012 kg C-12,
These basic units can be atoms, molecules, ions, electrons or molecules
Other particles, or a specific combination of these particles
This constant is called "Avogadro constant", and the sign is "Na",
The value is 6.022 * 10 ^ 23
(3) Other questions
The atomic mass of a carbon-12 is, of course, about half of its true mass
12 times of 1 / 12 (12U)
The true mass of a mole of carbon-12 should be 12g (12g)

What is the molar mass divided by Avogadro constant

The mass of an atom of the substance

Avogadro constant and molar mass
How can the Avogadro constant be calculated to the 23rd power of 6.02 * 10? Why is the number of each particle so many? Why is the molar mass equal to the formula? It's better to give the following formula

The Avogadro constant is defined as the number of atoms contained in one twelfth of 12C, 6.02 × 10 Avogadro constant ^ 23. This value is an approximation of Avogadro constant, which is different from each other. The sign of Avogadro constant is Na, not a pure number. Its unit is mol-1