Answer:
please give me brainlist and follow
Explanation:
Importance of symbols and Formulae :
Symbols and formulae of substance gives a lot of information like. Types of elements present in the compound. E.g. (H20 is made of two elements hydrogen and oxygen). Number of each kind of atoms in one molecule.
Answer:
Single replacement is a reaction in which one element reacts with another compund to form another compound and another element.
planation:
Covalent bonds such as Sodium Fluoride.
There are 3 significant digits in 5.40.
(To help understand): Sig figs are just a way of simplifying a number.
