\textbf{233 --} The electrolysis cell passes 448 liters of oxygen gas at STP and its reaction with hydrogen gas is sufficient to transfer, in a silver-plating cell (with 100\% efficiency), how many grams of silver to a silver-plating object?
$$(\text{O} = 16,\ \text{Ag} = 108\ \text{g.mol}^{-1})$$
$$
(1)\quad 2160 \qquad (2)\quad 4320 \qquad (3)\quad 6480 \qquad (4)\quad 8640
$$