The answer is (4), (3) is merely a change in composition, thus not chemical but physical.
Answer: (4).
Answer:
C
Explanation:
Their are pressure sensers in the water that will detect high pressure and set of scales that are currently detecting semic waves and trigger sierns.
Answer:
Nitrogen will called as atom or molecule or ion too in the state which it exist means in which form it is present .
Experiments suggest that organic molecules could have been synthesized in the atmosphere of early Earth and rained down into the oceans. RNA and DNA molecules — the genetic material for all life — are just long chains of simple nucleotides. Replicating molecules evolved and began to undergo natural selection.
Answer:
2.5 L
Explanation:
The stoichiometric ratio of N2 to N2O4 is 1:1
