A. Molar Mass
Explanation:
Gram molecular mass is the mass in grams of one mole of a molecular substance. Gram molecular mass is the same as molar mass.
<u>Explanation:</u>
<u>Similarity between the two:</u>
Molecular formula and structural formula gives the exact number of atoms of different chemical elements that are present in a compound.
<u>Difference between the two:</u>
Structural formula gives us the relative positions of the atoms that are present in a compound whereas molecular formula does not give us the relative positions of the atoms. But it gives us the ratio of atoms in a given compound.
Answer:
Choice B
They are polar climates because they are dry
and cold