20 mL of a mixture of CO and H were mixed with excess of O and exploded & cooled. There was a volume contraction of 23 mL. All volume measurements corresponds to room temperature (27C) and one atmospheric pressure. Determine the volume ratio V V of CO and H in the original mixture : (a) 6.5 : 13.5 (c) 9: 11 (d) 7:13 (b) 5:15