Answer is D absorption line at 502
Hey are you from Calvert too? I got the same questions for the DBA
Answer:
rusting occur in oxygen and water coz when you put a nail into the water and you leave it three days you will the nail become brownish and that is due to oxygen and water
Explanation:
both iron and sulphur in FeS2 undergo a change in oxidation state.
O2° -->2O degree2- Total decrease = 2×2=4
So, 4FeS2+11O2 --> 2Fe2O3+8 SO2
Hence, balanced
Answer:
people or scientist tend to observe the nature of the continents that described by jigsaw fit,geological similarity among the continents