Answer:
Television cause it has a satellite
Answer:
2 HgO → 2 Hg + O2
Explanation:
Decomposition is when one reactant breaks down into two or more products due to heat, light or electricity
Here mercury (II) oxide goes through thermal decomposition to make mercury and oxygen
Answer:
Should be 0.6106 though i could be wrong
Explanation:
Answer: The coefficient must be 3.
Explanation:
According to the law of conservation of mass, mass can neither be created nor be destroyed. Thus the mass of products has to be equal to the mass of reactants. The number of atoms of each element has to be same on reactant and product side. Thus chemical equations are balanced.

The number of atoms of each element has to be same on both sides, thus the balanced chemical reaction will be:

Thus a coefficient of 3 should go in front of
to balance calcium (Ca).