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4. The production of penicillin follows the bio reaction described below: (5C6H12O6+aH2SO4+bNH3cC16H18O4N2S+dH2O+eCO2+CC4H7O3N If the cell yield YX/S was 0.55g cell/g substrate and product yield Yp/s

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4. The production of penicillin follows the bio reaction described below: (5C6H12O6+aH2SO4+bNH3cC16H18O4N2S+dH2O+eCO2+CC4H7O3N If the cell yield YX/S was 0.55g cell/g substrate and product yield Yp/s was 0.15g product/g substrate, calculate: - The stoichiometric coefficients a, b, c, d, e and f. - The amount of sulfuric acid required to give cell concentration of 120g/L (the reactor volume is 2000L ). Molecular weight of substrate: 180 Molecular weight of biomass: 334 Molecular weight of oxygen: 32 Molecular weight of ammonia: 17 Molecular weight of carbon dioxide: 44 Molecular weight of water: 18 Molecular weight of product: 117 Molecular weight of sulfuric acid: 98

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