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Problem 14 - Entrance Test

A pine tree produced 3.2 kg of dry biomass in a year. Calculate the CO₂ fixed if dry mass is 45 % carbon.

Correct: A

C mass = 0.45×3.2 = 1.44 kg. CO₂ mass = 1.44×44/12 = 5.28 kg ≈ 5.3 kg.