Ahydrocarbon is a compound comprised of carbon and hydrogen atoms. an unknown hydrocarbon is found to have the empirical formula ch2 and has a molecular mass of 84.0 g/mol. what is its molecular formula?
c6h12
ch2
c4h8
c3h6

1) which of the following is the best example of a physical change? a) sugar dissolving in tea b) firefly glowing 2) in the combustion of ethane, what is/are the reactants? c2h6 + o2 ==> co2 + h2o a) c2h6 and o2 b) co2 and c2h6