In a normal phase partition column, a solute was found to have a retention time of 29.1 min, while an unretained solute had a retention time of 1.05 min when the mobile phase was 50% chloroform:50% hexane. Calculate K' for the solute and find the mobile phase composition that will bring K' to 10. (P'hexane = 0.1, P'chloroform = 4.1)