Which one of the following is a combustion reaction?

Friction acts in a direction blank to the direction of the object's motion?

The sum of the measures of the interior angles of the figure is 720°

A cube has sides of 11.4 cm. what is its volume?

When light cannot travel trough a material, the light has been refracted reflected absorbed radiated

Which of the following equations is balanced? A) 4P + 2O 2 - - > 2P 4 O 5 B) 2P + O2--> P 2 O 5 C) 5P + 4O 2 - - > 2 P 4 O 5 D) 4P + 5O 2 - - > 2P 2 O 5

What mass of potassium chlorate would contain 40grams of oxygen?

Identical forces act for the same length of time on two different masses. The change in momentum of the smaller mass is A) smaller than the change in momentum of the larger mass, but not zero. B) zero.

How many nuclei of 238 92 U 92 238 U remain in a rock if the activity registers 290 decays per second? (Note that the half life of Uranium-238 is 4.468x109 years)

A base can neutralize an acid. true or false

Hydrochloric acid (12.0 ml of 0.233 m) is added to 296.0 ml of 0.0579 m ba (oh) 2 solution. what is the concentration of the excess h + or oh - ions left in this solution?