Use the formula for energy stored between the plates of a capacitor:
where Q is he charge (given) and U is the electric potential (aka voltage), given.
The stored energy is 2.2 10^{-10} Joules.
Im not 100% sure but i think its bromine.
Hope this helps ^_^
The answer is B, 14 Seconds
Answer;
Activation energy
Explanation;
Activation energy is the least possible amount of energy (minimum) which is required to start a reaction or the amount of energy available in a chemical system for a reaction to take place.
Catalysts can lower the activation energy and increase the reaction rate without being consumed in the reaction. The lower the activation energy for a reaction, the faster the rate. Thus enzymes speed up reactions by lowering activation energy.
Answer:
The answer to your question is Nonmetals
Explanation:
Nonmetals they are bad conductors of heat and electricity except graphite.
Metalloids they are less conductors of electricity than metals.
Noble gases they conduct electricity.
Halogens they are not metals and do not conduct electricity.
From this information, we conclude that Oxygen and Selenium are nonmetals.