أرشيف الوسم : composition

ATOMS Law of constant composition: This states that “A chemical compound (if pure) always contains the same elements combined together in the same proportion by mass regardless of bow the compound is prepared or from where it is obtained”. Law of conservation of mass: This is defined as “In every chemical reaction, the total mass of the products is the …

The percentage composition of a compound is the percent by mass of each element in the compound. How do we calculate the percent composition? Here are the steps: Calculate the molar mass of the compound.       2.Divide the molar mass of each element by the molar mass of the compound and multiply by 100%. For example, here is …

Compounds Compounds are pure substances that differ from elements because they contain more than one kind of atom. The Law of Definite Composition (or the Law of Definite Proportions) applies to compounds. For example, sodium chloride contains one atom of sodium for each atom of chlorine. Water contains two atoms of hydrogen for each atom of oxygen. It is known …