A batch of ibuprofen powder was analysed by reversed phase liquid chromatography to determine the percentage purity of the API. 50.1 mg of the product was dissolved in 100 mL of solvent, and 1 µL of this solution was injected onto the HPLC system. The principal peak eluted at 6.13 min with an area of 10972.1. A reference solution was prepared containing 48.7 mg of ibuprofen standard (99.15 % purity), made up to 100 mL in a volumetric flask. 1 µL of this solution was injected onto the HPLC system, giving a peak eluting at 6.12 min with an area of 11005.9. Calculate the purity of the ibuprofen batch (% w/w).  (5 marks)

A sprinter’s hamstrings lengthen repeatedly while he/ she is running a race, but there is no permanent damage or injury to the muscles. The athlete’s hamstrings were loaded into the _______ region. 

In _______ muscle actions, MTC develops the same force as the external force.

A pseudo-first order degradation of a 0.05 M drug solution has a rate constant of 0.000953 month-1. What is the shelf-life of the drug solution for a 95% limit?

What type of energy is not conserved in an inelastic collision?

In ______ muscle actions, the joint angle does not change.

Furosemide acts to promote diuresis and natriuresis in heart failure patients by which of the following mechanisms?

A 6’2″ female patient is currently being ventilated in AC/VC mode on the following settings: Vt 500, RR 14, PEEP 5, and FIO2 50%.  The patient’s high PIP alarm is sounding and the respiratory therapist notes thick secretions in the ETT.  The patient’s SpO2 is currently 87%.  What is the most appropriate initial action?

A reduced flow rate can lead to:

Which of the following could be responsible for the following image: