An aqueous drug solution undergoes first-order degradation with a

half-life of 205 hours. If the initial concentration is 50 mg/ml, what is the shelf-life (t10%) of the product?
Q. 5 The first order degradation rate of a drug at 80°C and 70 °C are 0.0073 hr-1 and 0.0054 hr-1 respectively. What is the shelf-life at 25°C. What is the shelf- life under refrigeration (6°C)?
Q.6 A drug undergoes degradation with a half-life of 4 hours when initial concentration is 0.02 M and the half-life is 16 hr when the initial concentration is 0.08 M. What is the reaction order? What will be the half-life of degradation of the drug if the initial concentration is 0.0045 M?