Molecular mass is defined to be the sum of the masses of the individual atoms that make up a molecule. Hydrogen peroxide $(\text{H}_2\text{O}_2)$ contains $2$ atoms of hydrogen and $2$ atoms of oxygen and has a molecular mass of $34.01468$ grams per mole $\left(\dfrac{\text{g}}{\text{mol}}\right)$. Water $(\text{H}_2\text{O})$ contains $2$ atoms of hydrogen and $1$ atom of oxygen and has a molecular mass of $18.01528$ $\dfrac{\text{g}}{\text{mol}}$ . Which of the following systems could be used to find the mass of one atom of hydrogen, $x$, in $\dfrac{\text{g}}{\text{mol}}$ , and the mass of one atom of oxygen, $y$, in $\dfrac{\text{g}}{\text{mol}}$ ? [[☃ radio 1]]