If the average speed of a helium atom at a certain temperature is 1120 m/s what is the speed in miles per hour?

40 miles per hour because if you think about it there is 1120 m/s

The oxygen atom holds the electrons in a covalent bond more closely than the hydrogen atoms and develops a partial negative charge.

Explanation:

Water molecule is composed two hydrogen atoms and one oxygen atom.Both the hydrogen atom interact with the single oxygen by the formation of covalent bond.

  Although the covalent bond is formed but the bonding electrons are not shared equally by both the atom.As oxygen is more electronegative than that of hydrogen atom,oxygen attract the bonding electron pair towards itself.

  As a result the hydrogen atom get partial positive charge and oxygen atom gains partial negative charge.