4Fe + 3O2 + xH2O → 2Fe2O3 • xH2O

The formation of rust (equation above) is an example of both combustion and

a] Synthesis

b] decomposition

c] single replacement

d] double relacement

Earth spinning on its axis is which type of movement? A) Translational B) Rotational C) Vibrational

How does runoff affect the rate of erosion?

ou have just moved into a new apartment and are trying to arrange your bedroom. You would like to move your dresser of weight 3,500 NN across the carpet to a spot 5 mm away on the opposite wall.

Two carts with masses of 4.0 kg and 3.0kg move toward each other on a frictionless track with speed

Which represents a system that is almost completely closed?

When viewing a piece of art that is behind glass, one often is affected by the light that is reflected off the front of the glass (called glare), which can make it difficult to see the art clearly.

force used to lift a 25kg mass to a height of 24m in 5 sec does 2120J of work. Calculate the power.

Which statement is true about the atom? A: it contains positive electrons, uncharged protons and negative protons. B: it contains uncharged neutrons, positive electrons and negative protons.

Steel objects can become temporary magnets because they are mainly composed of which element?

How long does it takes the sun to rotate the earth?