Question

Calculate the mass of the following:

$1.5\mathrm{mole}$of ${\mathrm{Na}}^{+}$ ion

Answer 1

• The mole formula is-
• $\mathrm{Mole}\left(\mathrm{mol}\right)=\frac{\mathrm{Mass}\left(\mathrm{g}\right)}{\mathrm{Molar}\mathrm{Mass}(\mathrm{g}/\mathrm{mol})}$
• We can rearrange the formula to get the mass formula.
• $\mathrm{Mass}\left(\mathrm{g}\right)=\mathrm{Mole}\left(\mathrm{mol}\right)\times \mathrm{Molar}\mathrm{Mass}(\mathrm{g}/\mathrm{mol})$
• Molar Mass of ${\mathrm{Na}}^{+}$- $23$
• Moles of ${\mathrm{Na}}^{+}$- $1.5\mathrm{mol}$
• We can substitute these values in the mass formula.
• $\mathrm{Mass}=1.5\times 23$
• $\mathrm{Mass}=34.5\mathrm{g}$
• Hence, $34.5\mathrm{g}$ is the mass of $1.5\mathrm{mol}$ of ${\mathrm{Na}}^{+}$.