Answer:
3
Explanation:
If oxygen reacts with iron, then both must be reactants and rust the product of that reaction
B. He would be considered an Organic Chemist since Organic Chemistry is the study of Carbon and its compounds.
It is a. oxidation-reduction
Answer:
4Amps. i can't see other questions clearly
Explanation:

I=V/R
I=120/30
I=4amps
Answer: Soundwaves travel as longitudinal or transverse waves depending on the temperature of the medium.
Explanation: i think its C