a is the answer because all of the other answers are wrtong
Answer:
I think so henterogeneous
Oxygen,hydrogen, and carbon
Answer:
B.) He added a base to raise the PH
Explanation:
Took test
Presumptive tests, also known as preliminary tests or field tests, allow drugs to be quickly classified into a particular chemical group, but do not unequivocally identify the presence of a specific chemical compound.
