Which type of test helps forensic scientists to narrow down the possibilities of what drug a substance may be Confirmatory test test test

The answer should be c.

Enzyme make a hormone as a catalyst

You use the atomic number to find out how many protons and neutrons there are in the atom. you use the atomic mass to find out how many protons and electrons there are in the atom. 

Theoretical temperature at which molecules stop moving and no more heat can be removed from the object. kelvin: absolute zero degrees. none of the above.