What are chemistry questions for high school students about atomic size trends?

Suppose you wanted to make 100 grams of water. what is the molar mass of water (h2o)?

What does an electron configuration for an atom relate to the atoms placement on the periodic table

Now look at the segment of the graph between the two data points marked with black squares. describe how the boiling point and melting point plots behave between these points. be as specific as possible.