question_answer

In a measurement of quantum efficiency of photosynthesis in green plants, it was found that 10 quanta of red light of wavelength \[6850\overset{o}{\mathop{A}}\,.\]were needed to release one molecule of \[{{O}_{2}}.\] The average energy storage in this process is \[112\,\,kcal\,/\,mol\,\,{{O}_{2}}\] evolved. What is the energy conversion efficiency in this experiment? Given: 1 cal = 4.18 J; \[{{N}_{A}}=6\times {{10}^{23}};\]\[h=6.63\times {{10}^{-34}}J.s\]

Answer:

26.90