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A compound in chemistry is a combination of atoms from at least two different elements. Compounds do not contain mixtures of elements. They form through a chemical binding process and are in stable ratios.


The formula for half-life in chemistry depends on the order of the reaction. For a zero order reaction, the formula is t½ = [Ao] / 2k. For a first order reaction, t½ = 0.693 / k, and for a second order reaction, t½ = 1 / k [Ao]. Half-life, or t½, is the time that elaps...


The percent difference formula for chemistry is expressed as (accepted value - experimental value) / accepted value * 100. Percent difference in chemistry is also called percent error. It is a common calculation that expresses the difference between a measured value and...


The molecular formulas of compounds express the number and type of atoms that make up one molecule of the compound. For example, the molecular formula of table salt, or sodium chloride, is NaCl. This means table salt has one atom of sodium and one atom of chlorine.


Chemistry is the scientific study of the composition, properties and interactions of organic and inorganic matter. Chemistry is commonly used in fields of science and medicine, according to About.com.


One formula for calculating yearly compound interest is M=P(1+i)n. "M" represents the final amount with the principal and interest combined, "P" represents the principal amount, "i" represents the interest rate, and "n" is the number of years invested.


Common types of formula used to represent a chemical compound include molecular formulas, empirical formulas and structural formulas. Condensed structural formulas, which are derived from structural formulas, are also utilized to convey more detailed features of a compo...