Please answer this its really fast In the following balanced equation what is a correct mol ratio? *

1 mol CH4 / 2 mol CO2
1 mol O2 / 1 mol H2O
2 mol CO2 / 3 mol O2
4 mol H2O / 3 mol CH4

Calculate the molarity of each of the following solutions. part a) 0.12 mol of lino3 in 5.5 l of solution part b) 60.7 g c2h6o in 2.48 l of solution part c) 14.2 mg ki in 100 ml of solution