1. A pepsin of 3 grams get dissolved in water and formed a solution of 10.00 mL , it was found that the osmotic pressure was 0.213 atm at 25 degree Celsius then calculate what would be the molecular weight of pepsin?
2. as of 2007 world record for swimming 1500.0 m in a long course pool is 14 min 34.56 s. if we follow this rate then calculate how many seconds would be taken by a man to swim 0.850 miles?