Question

Neon has an average atomic mass of 20.2 g/mol, whereas argon has an average atomic mass of 40.0 g/mol. How would the number of atoms in a 1.0 mol sample of neon compare to the number of atoms in a 4.0 mol sample of argon?

Answer 1

The argon sample would have the same number of atoms as the neon sample.


>>> The argon sample would have twice as many atoms as the neon sample. <<< I think this is the correct answer.


The argon sample would have 4 times as many atoms as the neon sample.

The argon sample would have 8 times as many atoms as the neon sample.

Answer 2

The argon sample would have the same number of atoms as the neon sample.

Answer 3

Could you explain how you got that answer please?

Answer 4

A mole is a proportion, it is fixed and it means a certain amount always, 6.023x10^23.

Its analogous to saying "a dozen"

1 dozen of doughnuts = 12 doughnuts
1 dozen pineapples = 12 pineapples

1 mole of doughnuts = 6.023x10^23 doughnuts
1 mole of argon atoms = 6.023x10^23 atoms

ps. Noble gases are monoatomic, meaning composed of only 1 atom, this is due to their full valence shell which makes them inert (unreactive).

Other gases like Oxygen gas or Nitrogen gas are diatomic, meaning that there is 2 atoms per molecule.

so 1 mole of Oxygen gas = 6.023x10^23 molecules

but there is twice as many atoms because its diatomic.

so there is 2 x 6.023x10^23 atoms in one mole of oxygen gas.

Answer 5

So you got it from another answer. I saw that same one but could not translate it correctly for me to understand. Thank you for translating it and providing an answer for me anyways. :)

Answer 6

c; yes cx