What are the characteristics of a homologous series? (tick all that apply) A. Can be represented by a general formula B. Similar physical properties C. Similar chemical properties D. Same molecular formula

C5H12

Explanation:

In organic chemistry the boiling point of 309 k is of fifth member of alkane series which Pentane whose molecular mass is 72 g/mol.  Thus, we can say that the  molecular formula of the compound which has boiling point 309 K is C5H12.

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link:

photosynthesis makes the glucose that is used in cellular respiration to make atp. the glucose is then turned back into carbon dioxide, which is used in photosynthesis. while water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.