During the electrolysis of an aqueous sodium sulfate solution, hydrogen gas is produced at the negative electrode and oxygen gas is produced at the positive electrode.
The relationship between the volume of oxygen gas and the volume of hydrogen gas produced is shown in the graph below:

Use the graph to answer the following:
State the quantitative relationship between the volume of hydrogen produced and the volume of oxygen produced.
Determine the volume of hydrogen produced when the volume of oxygen produced is 4.8 cm34.8\text{ cm}^34.8 cm3.