When electrical energy is "used" by an electric light, what really happens to the energy?

It changes to matter.

It is given off as other forms of energy.

It stops at the electric light.

It disappears.

Into what kinds of energy does a toaster convert electrical energy?

When in a compound, the oxidation number of a nonmetal: A). is always fixed and can never be changed B). can only be deduced once all the other oxidation numbers in the equation are totaled C).

What is the molarity of a 3.0-liter solution that contains 0.45 moles of solute?

Write an equation to show how hco3 - can act as a base with hs - acting as an acid.

When water becomes ice, the molecules spread out to form a specific shape. What determines this shape?

Why are Van der Waals forces important? A) They determine how strong dipole moments will be in polar covalent molecules B) They are the strongest type of intermolecular force that can act on polar and non-polar molecules C) They are primary

When heat is added to or removed from a substance, it may change its state. What state will most likely result if heat is added to a liquid?

Chemical Reactions Lab Procedures: 1. Place a 1cm long piece of white chalk in a clear plastic cup. 2. Add 5 mL of vinegar to the cup. 3. Record your observations. If you were performing the procedures above you would need to A.

How many moles of oxygen are in 0.53 moles of co 22?

The car wit fastest acceleration is the tempest. it has an acceleration of 6.1 m/s. suppose the car accelerates from rest to a final speed of 30. m/s. how long does it take the tempest to reach this speed?