Question

In a fully charged lead storage battery, the cathode grid is packed with…
a. spongy lead
b. lead sulfate
c. lead (IV) oxide
d. sulfuric acid

Which of the following is true for an electrolytic cell?
a. It changes electrical energy into chemical energy
b. It is the type of cell used in electroplating
c. It uses an electric current to make a nonspontaneous reaction go.
d. all of the above

Oxygen and copper are produced during the electrolysis of a CuO solution. Which reaction occurs at the negative electrode?
a. oxygen ions are reduced
b. oxygen atoms are oxidized
c. copper ions are reduced
d. copper atoms are oxidized

Which type of ionizing radiation can be blocked by clothing? A
a. alpha particle
b. gamma radiation
c. X-radiation
d. beta particle

A piece of wood found in an ancient burial mound contains one-fourth as much carbon-14 as a piece of wood cut from a living tree growing nearby. If the half-life for carbon-14 is 5730 years, what is the approximate age of the ancient wood?
a. 1432.5 years
b. 2865 years
c. 5730 years
d. 11,460 years

In nuclear fission…
a. certain atoms break into fragments when struck by neutrons
b. a chain reaction cannot occur
c. energy is absorbed
d. all of the above

Answer 1

Answer:

c. lead (IV) oxide

a. It changes electrical energy into chemical energy

b. It is the type of cell used in electroplating

c. It uses an electric current to make a nonspontaneous reaction go.

b. oxygen atoms are oxidized