difference between atom and mol?

[joonkimdds]

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[La Miraflorina]

An atom is the smallest basic unit of any element. It's made up of protons, neutrons and electrons.

A molecule is a combination of atoms. 2 atoms of O combine to make the O2 molecule we breathe in the air. Water is a combination of 3 atoms: 2 atoms of O and 1 atom of H.

A mol is 6.022x10 to the 23 of anything... just like a dozen is 12 of anything. A mol can be 6.022x10 to the 23 atoms or 6.022x10 to the 23 molecules.

For example, in one mol of water (meaning 6.022x10 to the 23 molecules of water) contains one mol of hydrogen (6.022x10 to the 23 atoms of hydrogen) and two moles of oxygen (2x6.022x10 to the 23 = 1.20x10 to the 24 atoms of oxygen).

Think of it this way: If I have 3 dozen eggs, how many eggs do I have? Since a dozen means 12, I have 36 eggs. If you have 1 mol of eggs, you have 6.022x10 to the 23 eggs. If you have 1 mol of water molecules, you have 6.022x10 to the 23 molecules... or atoms... or whatever you are counting...

Hope this helps.

 

[joonkimdds]

For example, in one mol of water (meaning 6.022x10 to the 23 molecules of water) contains one mol of hydrogen (6.022x10 to the 23 atoms of hydrogen) and two moles of oxygen (2x6.022x10 to the 23 = 1.20x10 to the 24 atoms of oxygen).

one mol of water contains (H20) 2 mol of H.
so does this mean there are 2 atoms or 1.20x10 to the 24 atoms?
I know that we multiply the mol and avogadro's number to get the number of atoms.

But~ in this book i am reading now, says
C6H12O6 contains 6atoms of carbon, 12 atoms of hydrogen, and 6 atoms of Oxygen.
I think they should be called 6 mols of Carbon, 12 mols of Hydrogen and 6 moles of Oxygen instead of atoms.

if the book is correct, does that mean i should divide avogadro's number from atom to get mol? so it's like mol of carbon is 6atom/avogadro's number?

 

[La Miraflorina]

one mol of water contains (H20) 2 mol of H.
so does this mean there are 2 atoms or 1.20x10 to the 24 atoms?
I know that we multiply the mol and avogadro's number to get the number of atoms.

One molecule of H2O has one H atom and 2 O atoms... BUT...
One mol of H2O has one mol of H atoms (6.022x10^23 H atoms) and 2 mols of O atoms (1.20x10^23 O atoms).

But~ in this book i am reading now, says
C6H12O6 contains 6atoms of carbon, 12 atoms of hydrogen, and 6 atoms of Oxygen.
I think they should be called 6 mols of Carbon, 12 mols of Hydrogen and 6 moles of Oxygen instead of atoms.

So one glucose molecule has 6 atoms of C while one mol of glucose has 6x6.022x10^23 Carbon atoms.

if the book is correct, does that mean i should divide avogadro's number from atom to get mol? so it's like mol of carbon is 6atom/avogadro's number?

No. If you have 6 atoms of C per glucose molecule, and you have one mol of glucose, you MULTIPLY 6 * avogadro's number to get the number of atoms of C per mol of glucose.

So in each mol of glucose, you have 6 mol of Carbon atoms.

 

[eapleitez]

You got the atoms in the water molecule mixed up.

Water has 2 atoms of H, and 1 atom of O