2) Protons and neutrons weigh `1/(6xx10^23)` grams

Every, and we mean every proton and neutron =1
6 x 10²³ grams

An amazingly small number.

Remember this:

1 proton = 1
6 x 10²³grams

and

1 neutron = 1
6 x 10²³ grams

This is true, whatever the element, atom or molecule.

Examples

The weight of 1 mole of any proton = 6 x 10²³ x 1
6 x 10²³ grams

= 6 x 10²³ x 1
6 x 10²³ grams

= 1 gram

The weight of 1 mole of any neutron = 6 x 10²³ x 1
6 x 10²³ grams

= 6 x 10²³ x 1
6 x 10²³ grams

= 1 gram

That’s correct: the weight of any mole of protons or neutrons = 1 gram

WOW!