Which radioactive isotope is used to determine the age of once living organisms

In this synthesis reaction what products will form

What is the empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5

Astudent is trying to create a table that compares hypotheses, theories, and laws. hypothesis theory law do scientific researchers formulate it? yes yes yes does it explain why things happen? yes yes no yes yes yes is it used to make predictions? no yes yes which of the following questions would most likely fill the blank in the table? is it an intelligent guess? is it newly formulated? is it based on observations? has it been proved?