Answer:
D. A brown gas produced
Explanation:
When a chemical reaction occur, there are several changes that takes place such as change in color, odor change, formation of a gas, and formation of a precipitate etcetera.
In the given chemical reaction, two colorless gas (NO and O2) react together and form brown gas (NO2). So, the change of gas from colorless to brown gas is the evidence that shows chemical reaction occurred.
Hence, the correct option is "D. A brown gas produced".
Answer:
Gamete cell
Explanation:
One of the primary roles of the reproductive organs is the production of which of the following kinds of specialized cells?
Answer:
Where is the question bro!!!
Explanation:
Answer:
yes their is
Explanation:
I don,t really know how to explain my answer
