Explanations:- As per the significant figures rule, In multiplication and division, we go with least number of sig figs.
4.03 has three sig figs where as 0.0000035 has two sig figs only, The zeros in this number are not sig figs as they are just holding the place values. As the least number of sig figs here is two, the answer needs to be reported with two sig figs only.
Answer: 1.
2.
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.
1. Decomposition is a type of chemical reaction in which one reactant gives two or more than two products.
Thus in balanced chemical decomposition of , the missing component is
.
2. Synthesis is a type of chemical reaction in which two reactants combine to give a single product.
Thus in balanced synthesis reaction of , the missing component is
.