Which formula represents a polar molecule?

(1) O2

(2) CO2

(3) NH3

(4) CH4

Does plasma have high or low kinetic energy?

Determine the new pressure of a sample of hydrogen gas if the volume and moles are constant, the initial pressure is 6.0 atm, and it is heated from 15°C to 30.°C.

How many particles are in 12 moles of H2O

What does the Pauli exclusion principle state? A) Electrons will be added to an atom at the lowest possible level or sublevel. B) An orbital can contain two electrons only if all other orbitals at that sublevel are empty.

Which of the following actions describes nuclear fusion A joining of two atoms by a chemical bond B splitting of a big nucleus C joining of small nuclei to produce bigger nuclei D sharing of electrons between two uranium atoms

How does a tree speed up erosion? How can it slow erosion down?

In terms of electron configuration, why arsenic and antimony are chemically similar.

What does average speed mean

What are two types of chemical composition that characterize minerals?

Why is it important that the polymer membrane in a PEM fuel cell allows only protons to move through it? It forces the electrons to move through an external circuit, where they can do work.