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## formula

(Encyclopedia) formula, in chemistry, an expression showing the chemical composition of a compound. Formulas of compounds are used in writing the equations (see chemical equations) that represent…## formula

(Encyclopedia) formula, in mathematics and physics, equation expressing a definite fixed relationship between certain quantities. The quantities are usually expressed by letters, and their…## structural formula

(Encyclopedia) structural formula: see formula.## molecular formula

(Encyclopedia) molecular formula: see formula.## empirical formula

(Encyclopedia) empirical formula: see formula.## formula weight

(Encyclopedia) formula weight, in chemistry, a quantity computed by multiplying the atomic weight (in atomic mass units) of each element in a formula by the number of atoms of that element present in…## Formula One

(Encyclopedia) Formula One (F1), type of racecar used in Grand Prix automobile racing. Capable of speeds exceeding 230 mph (370 kph), the technologically sophisticated F1 cars are low-slung, open-…## Numbers and Formulas

Cardinal, Ordinal, and Nominal Numbers Factorials Finding Volume Finding Perimeter and Circumference Triangles Finding Area World's Largest Known Prime Number Finding Square Roots Order of Operations…## Common Formulas

CIRCUMFERENCE Circle: C = πd, in which π is 3.1416 and d the diameter.AREA Triangle: A = (ab)/2 , in which a is the base and b the height. Square: A = a2, in which a is one of the sides.…## Numbers & Formulas

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