Atoms and reactions

Which statement gives the numerical value of the Avogadro constant?

The number of moles of atoms in $g12.0\text{ g}$ of carbon-12.

The number of atoms in $g16.0\text{ g}$ of oxygen gas, $O2\text{O}_2$ .

The number of ions in $mole1.0\text{ mole}$ of sodium chloride, $NaCl\text{NaCl}$ .

The number of electrons lost by $g24.3\text{ g}$ of magnesium when it reacts with chlorine.

Which statement gives the numerical value of the Avogadro constant?

The number of moles of atoms in $g12.0\text{ g}$ of carbon-12.

The number of atoms in $g16.0\text{ g}$ of oxygen gas, $O2\text{O}_2$ .

The number of ions in $mole1.0\text{ mole}$ of sodium chloride, $NaCl\text{NaCl}$ .

The number of electrons lost by $g24.3\text{ g}$ of magnesium when it reacts with chlorine.

Atoms and reactions Questions