# Question #f8b95

$4.215 \cdot {10}^{25}$ atoms in 10 moles of Sulphuric acid
The number of molecules in 1 mole of any substance is given by Avogadro's constant, which is $6.023 \cdot {10}^{23}$. With this, we can work out that 10 moles of any substance contains $6.023 \cdot {10}^{24}$ molecules.
However, the number of atoms in a molecule of sulphuric acid is 7 - ${H}_{2} S {O}_{4}$. So we need to multiply the number of molecules of 10 moles of sulphuric acid by 7 to find out the number of atoms, which is $4.215 \cdot {10}^{25}$ atoms.