Which of the following is NOT an example of how to make a temporary magnet 1.Rubbing the non magnetic material against a positive or negative charge

2.Rub non magnetized material with one pole of a strong magnet

3.placing the non magnetized material in a strong magnetic field

What is the total reduction potential of a cell in which potassium (k) is reduced and copper (cu) is oxidized? a. 2.59 v b. 3.27 v c. -3.27 v d.-2.59 v

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

Which atom or ion is the largest? a. k b. k+ c. ca d. ca2+ e. li