The last one, vas a trabajar because it says tú, vas is the tú form. hope this helps!
Answer:
1. Molécula de oxígeno
2. Molécula de agua
3. Molécula de dióxido de carbono
4. Molécula de aminoácido
5. Molécula de glucosa
6. Molécula de almidón
7. Molécula de proteína
His<span> father, Walter Clement </span>Alvarez<span>, was a doctor who wrote a large number of medical books</span>
