Direction: Solve the problems using your own handwriting. Make your solution organized by presenting it according to the order of the required and place your final answers in a box. Submit the scanned document/s in a PDF format together with this questionnaire. 1. Given the Volumetric Analysis of a Natural Gas: CH4 = 80.10% Nitrogen = 7.40% CzHo = 10.70% CO2 = 1.80% Calculate the following: a) Actual A/F ratio at 20% excess air by mass and by volume b) Volumetric Analysis of Products C) A/F ratio considering an incomplete combustion where CO = 10% CO2 =