The total surface area of the Earth covered by ocean is 3.35 × 10⁸ km². Carbon is fixed in the oceans via hotosynthesis performed by marine plants according to the reaction 6CO₂(g) + 6H₂O(l) → C₆H₁₂O₆(s) + 6O₂(g).A lower range estimate of the mass of carbon fixed in the oceans is 44.5 × 10³ kg km² per year. Calculate the annual enthal y change resulting from hotosynthetic carbon fixation in the ocean er mole of C given the data above. Assume P = 1 bar and T = 298 K.