When 1 carbon atom combines with 2 oxygen atoms, the resulting substance is called a(n)

If two students are running down the hall toward each other, trying to get to class, and they have the same mass and acceleration, what will happen when they collide? will their forces cancel out or will each one experience a reaction?

Using a caesar cypher with an offset of three characters (a -> d, b -> e, z -> c), what would be the correct cypher text for the plain text "attack at dawn"?

How is an electron dot structure used to represent a covalent bond?