C. Given unlimited oxygen, what is the mass of water produced in the combustion of the 100 g of methane?

i think it is true since you can test the answer and can use observations to complete it.

that's what i got you can count the number of atoms

water at room temperature is flowing through a pipe with pressure taps located 10 ft apart along one section of the pipe, which are connected to a mercury (s=13.6) manometer.