A scientist conducts an experiment to determine the rate of the following reaction: N2(g)+O2(g)2NO(g) The rate of disappearing of N2 in the reaction at a particular instant is 4.2107M/s. i) Determine the rate of appearance of NO at that instant (3 marks) ii) If the initial concentration of N2 was 0.500M and the concentration of N2 was 0.450 M after 0.100s, calculate the rate of the reaction (2 marks)