1. Explain how natural gas was formed initially? (2 Marks) 2. What is the molecular formula of a compound that contains 39%C,45%N, and 16%H if 0.157g of the compound occupies 125ml with a pressure of 99.5kPa at 22C ? (show all the steps in your answer) (3 Marks) 3. Explain about one challenge in the field of Oil and Gas related to each mentioned below and suggest solutions for those challenges: a) NG Storage. b) NG transportation. (4 Marks) 4. Describe the future of natural gas in the world. (1 Mark)