What is the difference between the mole of the compound and the mole of the element?

Question

doc.brown · Answer

A mole of something is the number of them.
Like a dozen eggs is 12 eggs.
A mole of carbon is 602214129270000000000000 atoms of carbon.

A mole of a compound is the same number.

A mole of water $H_2O$ is about $6.022\times 10^{23}$ molecules of water, which is two moles of Hydrogen, and one mole of Oxygen.

nicole143 · Answer

I need help finding the mole of compound and of each element. I also need the atoms of each. If someone could help me figure out one and show me how, I'm sure I could figure the rest out myself..

vincent-lyon.fr · Answer

Please post the FULL question that you have to solve, as it is written in your book.

doc.brown · Answer

1 mole of hydrogen = 6.022 x 10^23 hydrogen atoms
1 mole of hydrogen gas H2 = 6.022 x 10^23 molecules of hydrogen gas, a compound.
1 mole of hydrogen gas = 1.204 x 10^24 hydrogen atoms

doc.brown · Answer

1 mole of helium = 6.022 x 10^23 helium atoms
1 mole of helium gas = 6.022 x 10^23 helium atoms
Helium gas is not a compound because the helium atoms are not bonded to each other.

doc.brown · Answer

1 mole of lithium = 6.022 x 10^23 lithium atoms
lithium reacts with water to form hydrogen gas and the compound lithium hydroxide
Li + H20 -> H2 + LiOH unbalanced equation
2Li + 2H20 -> H2 + 2LiOH balanced

1 mole of lithium hydroxide = 6.022 x 10^23 molecules

1 mole LiOH = 6.022 x 10^23 Li + 6.022 x 10^23 O + 6.022 x 10^23 H
1 mole LiOH = 1.807 x 10^24 atoms in the compound

doc.brown · Answer

Do you really have to do this for every element and every (pure chemical substance consisting of two or more different chemical elements that can be separated into simpler substances) compound?