the answer is d, cuz i just did it rn on my study island and i got it right :)
SEAgel (Safe Emulsion Agar gel) is one of a class of high-tech foam materials known as aerogels.
I think the correct answer would be because copper has a lower activity than hydrogen and cannot replace the bonds in it. Substances that are not oxidizing do not react with copper since the redox potentials are very low. Hope this answers the question.
1 milliliters in one milligram.