(a) what is a hydrocarbon ? (b ) pentane is the alkane with a chain of five carbon atoms. write a structural formula for this compound and determine its molecular and empirical formulas.

The density of water is 1 g/cm cubed and in order for the pebble to sink its density has to be greater than the density of water and in order for the twig to float its density has to be less than the density of water

Answer(false);