Yes a nucleus is located inside a cell.
Answer:
(C) im pretty sure is the answer
Explanation:
No, because plastic cups can be dissolved by organic compounds. Moreover, they are easily melted so a highly exothermic reaction can not be studied using them.
The answer is D because the air is made of nitrogen and oxygen. The reaction is endothermic.
Hope this helps you! :)
Red and blue but im not sure abt the percentage.
