The number of atoms in 0.5 mole of CH₂COOH is approximately 3.01 x 10^23 atoms.
To determine the number of atoms in 0.5 moles of CH₂COOH, one can use Avogadro's number, which represents the number of atoms, ions, or molecules in one mole of a substance. Avogadro's number is approximately 6.022×10^23 entities per mole. In the case of CH₂COOH (acetic acid), the molecular formula indicates that there are 4 carbon atoms, 6 hydrogen atoms, 2 oxygen atoms, and 2 hydrogen atoms.
Adding these together, we get a total of 14 atoms in one molecule of CH₂COOH. Since one mole is Avogadro's number of entities, in this case, atoms, the number of atoms in 0.5 moles of CH₂COOH is 0.5×6.022×10^23 atoms, which is approximately 3.01×10^23 atoms. Therefore, there are around 3.01 x 10^23 atoms in 0.5 moles of CH₂COOH.