Option d: copper.
Because copper is an element, not a mixture.
It would be 35g because you can break the ice chunk into as many pieces as you want when you combine them back together you'll always get the same weight
vitamins is the answer to your question
There are 137 atoms in this molecule. C55 + H72 = 127. 127 + Mg (one atom of magnesium = 128. 128 + N4 = 132. 132 + O5 = 137.
