Please answer about gas

3) The turpoexpander process shown in Fig(3) is used to recover part of the ethane as liquid. 30 MMSCFD of ethane is fed at 80F and 620 psia with WDPT of 40F is expanded to 140 psia . Assume the specific gravity of ethane is equal to 1.0 . a- Can you expand the gas without hydrate formation ? Support your answer . If not use an inhibitor to depress the hydrate formation temperature, and calculate the amount required in lbm/hr. b- Calculate the exit pressure and temperature from the compressor outlet (P3, T3) A- Calculate the exit pressure and temperature from the compressor outiet (P3,13) tion in