number of atoms?

Question

how many atoms would be included in 1 gram of hydrogen atoms? and how many atoms would be included in 2 grams of hydrogen molecules? how do you figure this out?

Answer 1

The atomic weight of hydrogen is very close to 1 so:

1 gram of hydrogen atoms is one mole of hydrogen atoms but only 1/2 mole of hydrogen molecules (because each hydrogen molecule is composed of 2 hydrogen atoms [H2]).

2 grams of hydrogen molecules is one mole of hydrogen molecules; since each molecule is 2 hydrogen atoms, 2 grams of hydrogen molecules is 2 moles of hydrogen atoms.

I hope this understandable.

Answer 2

In simplest terms, the relative atomic mass of hydrogen is 1.
Assume that 1 mole = 6 x 10^23 particles.

Since 1 mole of any atom weighs the equivalent of the relative atomic mass of that element in grams, the mass of 1 mole of hydrogen atoms is 1g.

So,
1g of H = 1 mole of H = 6 x 10^23 particles
2g of hydrogen molecules = 1 mole of H2 = 6x10^23 molecules of H2 = 1.2x10^24 atoms of H

Answer 3

1.) 1 gram of hydrogen = 1 mole of hydrogen
2.) 1 gram of hydrogen = 6.02x10^23 atoms
3.) 2 gram of hydrogen molecules= 1 mole H2 = 6.02x10^23 molecules of (H2)

let me explain : gram = measurement of how much heavy, or how much mass it contains... but NOT how many atomic atoms or molecules in it ...

we devise a conversion of MOLE ... which is ... we know that 6.02x10^23 hydrogen atoms WEIGH 1 gram ... and 6.02x10^23 hydrogen molecules weigh 2 gram....

ex. 6.02x10^23 oxygen atom = 8 grams
6.02 x10^23 oxygen molecules = 16 gram