There are zero number of methylene groups in the substance 2,4-dimethylhexane. Methylene groups are the part of a molecule that contains a carbon atom that has a double bond or =CH. Looking at the structure of 2,4-dimethylhexane, you cannot see any carbon atom that has a double bond.
been recorded between continents. The Atlantic Ocean at the mid-ocean ridge is currently opening up at a rate of 2 cm a year. Calculate how long it will take to create 2 meters (roughly 6ft)? (Metric system review)
