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PLEASE ANSWER 10 POINTS PLUS BRAINLIEST IF RIGHT

How did scientists calculate the most exact value for the mole?

1. through x-ray diffraction of silicon atoms

2. through the kinetic molecular theory by calculating the number of particles in a sample of gas

3. through counting the atoms in a sample of carbon-12 under a microscope

4. through the charge of an electron and Faraday’s constant

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shribhagwan568

Answer:

it's answer is through the charge of an electron and Faraday's constant