This is a tough one but the answer is water
think of it this way the ocean is water
I think it is C because photosynthesis converts solar energy
Answer:
The process of dissolving increases entropy because the solute particles become separated from one another when a solution is formed.
Answer:
When iron filings and sulphur powder are mixed and heated they undergo a chemical reaction and form ferrous sulphide (FeS). It is a new substance which has properties entirely different from Fe and S. Therefore, heating of mixture of iron and sulphur powder is a chemical change.
You subtract the atomic number from the atomic mass and you.
should get -125
