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2. Chemical formula - Wikipedia

   en.wikipedia.org/wiki/Chemical_formula

   A chemical formula is a way of presenting information about the chemical proportions of atoms that constitute a particular compound or molecule. Learn about different types of chemical formulae, such as empirical, molecular, and condensed, and how they are used in chemistry.

3. Chemical equation - Wikipedia

   en.wikipedia.org/wiki/Chemical_equation

   A chemical equation is the symbolic representation of a chemical reaction in the form of symbols and chemical formulas. Learn about the structure, reaction types, state of matter, catalysis, and notation variants of chemical equations.

4. Limiting reagent - Wikipedia

   en.wikipedia.org/wiki/Limiting_reagent

   A limiting reagent is a reactant that is totally consumed when a chemical reaction is completed. Learn how to identify the limiting reagent and calculate the percentage yield of a reaction using different methods.

5. Structural formula - Wikipedia

   en.wikipedia.org/wiki/Structural_formula

   A structural formula is a graphic representation of the molecular structure of a chemical compound, showing how the atoms are arranged in three-dimensional space and how they are bonded. Learn about different types of structural formulas, such as Lewis structures, condensed formulas, skeletal formulas, and how to draw and interpret them.

6. Formula - Wikipedia

   en.wikipedia.org/wiki/Formula

   A formula is a concise way of expressing information symbolically, as in mathematics, chemistry, or computing. Learn about different types of formulas, such as mathematical theorems, chemical formulas, and logical formulas, with examples and references.

7. Equivalent (chemistry) - Wikipedia

   en.wikipedia.org/wiki/Equivalent_(chemistry)

   Equivalent is the amount of a substance that reacts with or is equivalent to one mole of another substance in a chemical reaction. Learn how to convert between equivalent and milliequivalent (mEq) units, and see common examples of equivalents in medicine and biochemistry.

8. Mass fraction (chemistry) - Wikipedia

   en.wikipedia.org/wiki/Mass_fraction_(chemistry)

   Learn the definition, formula and properties of mass fraction, a dimensionless quantity that measures the ratio of a substance to a mixture. Find out how to calculate mass fraction from empirical formula, chemical formula, mixing ratio, mass concentration and molar concentration.

9. Equivalent weight - Wikipedia

   en.wikipedia.org/wiki/Equivalent_weight

   Equivalent weight is the mass of a substance that reacts with or displaces a fixed quantity of another substance. Learn how to calculate equivalent weight from molar mass, valence, and chemical reactions, and the history of this concept in chemistry.