Answer:
D. The electron moved up to an energy level and has an energy of 21.72 x 10−19 J.
Explanation:
Combustion produces energy. Where does all this energy come from? Energy is stored in the chemical bonds that hold the carbon and hydrogen atoms together. When the atoms are rearranged, the bonds are broken, releasing energy.
Answer:
The answer is 12.35
Explanation:
From the question we are given that the concentration of is
Generally The rate equation is given as
and the rate constant has a value
Substituting and making [] the subject we have
Multiply the value by as instructed from the question we have
Answer =
Hence the answer in 2 decimal places is 12.35