In terms of energy, how would you classify the following chemical reaction?

2Cu + O2 + 315 KJ---> 2CuO A. endothermic

B. exothermic

C. both endothermic and exothermic

D. Neither endothermic nor exothermic

How does fertilizer run off pollution?

What is work? How much work is done to move an object 0 meters?

What is specific latent heat

Which one would you weigh more if you traveled to two different planets that were exactly the same size/volume but one was made completely of iron and the other swiss cheese? Explain.

Light travelling in one material enters another material in which it travels faster. The light wave will:

Do you think Pluto should be considered a planet? Why or why not?

An object starts from rest at time t = 0.00 s and moves in the + x direction with constant acceleration. The object travels 14.0 m from time t = 1.00 s to time t = 2.00 s. What is the acceleration of the object? a) 5.20 m/s^2 b) 10.4 m/s^2 c) 8.

A box is dragged without acceleration in a straight-line path across a level surface by a force of 13 N. What is the frictional force between the box and the surface?

What is a wormhole, and how is it formed?

Most cells cannot harness heat to perform work because