What is the number of atoms present in 2 moles of oxygen?

 The number of atoms present in 2 moles of oxygen can be calculated using Avogadro's number, which is defined as the number of atoms, ions, or molecules in one mole of a substance. Avogadro's number is approximately 6.022 x 10^23 atoms, ions, or molecules per mole.

So, if you have 2 moles of oxygen, you can calculate the number of atoms as follows:

2 moles of oxygen x Avogadro's number (6.022 x 10^23 atoms/mole) = 12.044 x 10^23 atoms

Therefore, 2 moles of oxygen contains approximately 12.044 x 10^23 oxygen atoms.