The mass of unreacted zinc = 13 g
<h3>Further explanation
</h3>
The reaction equation is the chemical formula of reactants and products
A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reactants and products
Reaction
mol ratio Zn : HCl = 1 : 2
A molecule of a compound is composed of at least two types of atoms.
Explanation:
A molecule is defined as when two or more atoms of an element combine together by the bonds by sharing the electrons as O^2 (oxygen molecule)
A compound is a molecule when two different types of atom joined by chemical bonds as covalent, ionic or coordinate bonds as NH^3 ( ammonia)
→
<span>μ</span> ..
H · · Cl :
..
Majority of shared electrons will be found in Cl atom.
They all have the same number of protons and electrons but differ in the number of neutrons because they are isotopes.