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Problem 16 - Entrance Test

A kelp frond absorbed 0.84 g nitrate. Calculate the mass of protein-N synthesized if 50 % of nitrate-N is converted to protein. (N=14, NO₃=62)

Correct: N/A

0.84 g NO₃⁻ = 0.84/62 = 0.01355 mol. N content = 0.01355 mol ×14 = 0.1897 g. 50 % → 0.0948 g ≈ 0.095 g.