Answer:
I think it will be (B) only because you have to do it repeatedly and analyze it and not noted, in order for the results are accepted. I May be wrong. Thanks for letting me help you.
Answer:
it is not clear
but I think you are mean a oxidation state for element or compound ( molecule )
like -4 in [Cr(CO)4]4−
Answer:
You have to apply the base to an acid burn and vice versa.
Explanation:
