Oil, we are using it too fast for it to regenerate.
Decomposition reaction results in the formation of the products by splitting the reactants. Moles of mercury(ii) oxide needed are 15.63 moles.
<h3>What are moles?</h3>
Moles are the ratio of mass and the molar mass of the compound or the molecule.
Moles of oxygen are calculated as:

The balanced chemical reaction can be shown as,

From the reaction, it can be said that 1 mole of oxygen requires 2 moles of mercury oxide.
Moles of mercury oxide are calculated as:

Therefore, option C. 15.63 moles of mercury (II) oxide is needed.
Learn more about moles here:
brainly.com/question/26898237
Answer:
B. Non-metals
Explanation:
The element with the atomic number of 17 is Cl.
Chlorine belongs to the group 7 in the periodic table. It is a non metal.
Correct option: B. Non-metals
Answer:
Getting coated with tarnish
Explanation:
Silver, the original substance is combining with a new substance tarnish to make a whole new chemical.
Answer:
4.0625
Explanation:
1 grams Oxygen to mol = 0.0625 mol
0.0625 x 65 =4.0625