Ethane reacts with oxygen gas to produce carbon dioxide and water according to the following equation C2H4 +O2 -> CO2 +H2O Which of the following fractions can be used for the mole ratio to determine the mass of O2 from a known mass of CO2

i think   the answer is c hope i'm right

they it depends on if one believes about radioactivity, they make a geiger counter beep but maybe it was going to beep anyway electronics do wierd things all the time or it was programmed to beep near certain metals.