A mixture of 0.5 kg of carbon dioxide and 0.3 kg of nitrogen is compressed from 100

Question:

A mixture of 0.5 kg of carbon dioxide and 0.3 kg of nitrogen is compressed from 100 kPa, 300 K to 300 kPa in a polytropic process for which n = 1.25. Determine
(a) The final temperature (T2)
(b) The work (W)
(c) The heat transfer (Q)
(d) The change in entropy (ΔS) of the mixture.