Question

What is the mass of one atom of S? (b) What is the atomic mass of S? (c ) What is the gram atomic mass of S?

Answer 1

Hint – Here we will proceed by explaining the meaning of mass of one atom, atomic mass and gram atomic mass of Sulphur. By explaining the concept, we will get our answer.

Complete answer:
Mass of one atom – In order to find the mass of one atom of an element, you must determine its molar mass, which is its atomic weight on the periodic table in g per mol, and we need to know the relationship between the moles and the number of atoms.
Mass of one single atom sulphur
1 mol of Sulphur is 32 grams of Sulphur
The mass is $\dfrac{{32}}{{Avogadro's constant}}$ number in grams.
Avogadro’s number is defined as the number of units in one mole of any substance (defined as its molecular weight in gms), equal to 6.02214076$ \times {10^{23}}$.
Using Avogadro’s constant we get,
$ = \dfrac{{32}}{{6.022 \times {{10}^{23}}}} = 5.31 \times {10^{ - 23}}$
Atomic Mass- It is defined as a property that is closely related to an atom’s mass number is called as atomic mass. Atomic mass of an atom is basically the total mass of an atom and is typically expressed in atomic mass units and it can also be written as amu.
The variance in mass is due to the reason that most elements have more than 1 stable nuclide; for those elements, such an average depends on the mix of nuclides present, which may vary to some limited extent depending on the mix of nuclides present, which may vary to some limited extent depending on the source of sample, as each nuclide has a different mass.
$ = \dfrac{{32}}{{6.022 \times {{10}^{23}}}} = 5.31 \times {10^{ - 23}}$ grams = 32.66 amu, having a variance of $ \pm 0.005u.$
Gram atomic mass – It is the atomic weight on the periodic table of an element in grams. It is the mass of one mole of elements in grams, which is its molar mass. It is expressed in grams.
Gram atomic mass $ = $ Mass of 1 mole of S, in grams $ = 32$g

Note – Whenever we come up with this type of question, where we are asked to find the atomic mass, mass of an atom and gram atomic of a molecule. Then by using Avogadro’s number we can solve the atomic mass of an element. By using these basic approaches, we can easily solve this question.