a positive test charge of 4.5x10^-5 C is an electric field that exerts a force of 6.0x10^-2 N on it. what is the magnitude of the electric field at the location of the test charge?

In this chemical reaction, 325 grams of barium (ba) react completely. how many moles of lithium (li) are produced?

You encounter a solution that is acidic and you decide to test it by adding a small amount of a strong acid. the ph lowers slightly but is approximately unchanged, and still remains acidic. what can you say about the solution? a. it is a buffer solution. b. it is not a buffer solution it is a strong acid solution. d. the solution has been neutralized. e. the solution has excess acid present

What determines the average kinetic energy of the particles in a gas? a. the number of collisions b. the number of particles c. the size of the particles d. the temperature