It is a universal constant used for all gases
Answer:
3
Explanation:
If oxygen reacts with iron, then both must be reactants and rust the product of that reaction
B)
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a subatomic particle with no electric charge, found in the nucleus of an atom </span>
The peaks are there where the centre of the concentric circles lie. (Not circles exactly)
You can count a total 4 of them.
So there are a total of 4 peaks
See the attachment. I have marked them with a cross.