Snow forms in the upper atmosphere in a cold aid mass that is supersatuated with water vapor. When the snow later falls through a lower, warm air mass, rain forms. When atomic weight is 63.5 amu. Calculate the edge length of the unit cell.

Question

Snow forms in the upper atmosphere in a cold aid mass that is supersatuated with water vapor. When the snow later falls through a lower, warm air mass, rain forms. When atomic weight is 63.5 amu. Calculate the edge length of the unit cell.

Answer 1

Unit cell of what? Ice or Snow?

Snow form hexagonal planar cells, usually. In some temperatures, it can form elongaged nettle structures.

Ice forms in two forms in closely packed structure; hexagonal (Ih) and cubic (Ic).

Here is a site that has excellent repreentations of the two forms of Ice.
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I have no idea what the question is asking.