Explain the high surface tension and low vapor pressure of water in terms of the structure of the water molecule and hydrogen bonding

i think the high surface tension is the oxygen atom acquires a partial negative charge, while the hydrogen atoms acquire partial positive charges.

Hydrogen bonding between water molecules is responsible for its high surface tension, low vapor pressure, and high melting and boiling points relative to other molecular substances with similar molar masses.

the maximum mass of nh3 is nh3 in grams