When iron is exposed to oxygen it rusts or oxidizes. Which of these represents the balanced equation for this chemical change?

A) Fe + O → FeO

B) FeO → Fe + O

C) Fe + O2 → Fe2O3

D) 4Fe + 3O2 → 2Fe2O3

Express 5000g using prefixes?

What is the type of blood spatter that will come from blunt force trauma as opposed to a gunshot wound and why?

A body oscillates with simple harmonic motion accordingto the equation: x = (6.0 m) cos [ (3pai rad/s) t + pai/3 rad] at t = 2.0 s, what are: a.) the displacement b.) the velocity c.) the acceleration d.) the phase of the motion Also, what are e.

A baking tray is made of metal because it's of heat. An oven mitt is used to take the tray out of the oven because it's

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1. For a reaction to occur, energy must be to break chemical bonds. O A released OB converted OC absorbed

51 Mm is how many km?

What type of change occurs when water changes from solid to a liquid

Definition of artficial and natural radioactivity

In order for an object to conserve it's total mechanical energy it is absolutely necessary that?