In a photochemical reaction A 2 B + C, the quantum efficiency with 500 nm light
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In a photochemical reaction A → 2 B + C, the quantum efficiency with 500 nm light is 2.1 × 102 mol einstein−1 (1 Einstein = 1 mol photons). After exposure of 300 mmol of A to the light, 2.28 mmol of B is formed. How many photons were absorbed by A?
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