Why does the presence of lone pairs contribute to the polarity of a water molecule

The process of water moving through the world by precipitation,

Which type of rock forms as a result of cooling and crystallization?

Write the expression for the equilibrium constant Keq for the reaction below: 2KClO3 (s) ⇔ 2KCl (s) + 3O2 (g) A [KClO3] / [KCl] [O2] B [KClO3]^2 / [KCl]^2 [O2]^3 C [KCl] [O2] / [KClO3] D [KCl]^2 [O2]^3 / [KClO3]^2

A student conducts an experiment with a steel wool pad, which is comprised of iron. The student washes the steel wool in vinegar and then leaves the wool out in the open air for 15 minutes.

How are wavelength and frequency related to electromagnetic radiation?

How is water different from most liquids? It expands when it freezes. It contains chemical bonds. It has ionic and covalent bonds. It boils when it is heated.

In the thermal decomposition of copper carbonate, the black solid left behind weights less than the original copper carbonate. Why?

The element Oxygen, O, is an example of which of the following? Question 8 options: A compound B molecule C atom D mixture

For the reaction N2 (g) + 3H2 (g) 2NH3 (g), what will happen if more ammonia gas is added?

If Plank's constant is 6.6 x 10 (-34) J/Hz, then what is the approximate frequency of a photon having an energy of 3 x 10 (-19) Joules?