Chemistry Formulas
Key chemistry formulas for chemical calculations, gas laws, solutions, and stoichiometry.
Step-by-step examples included.
Avogadro's Number
Avogadro's number (6.022 × 10²³) defines how many particles are in one mole. Learn to convert between moles and individual atoms or molecules.
Boyle's Law
Boyle's law P₁V₁ = P₂V₂ describes how gas pressure and volume are inversely related at constant temperature. Includes worked examples.
Charles's Law
Charles's law V₁/T₁ = V₂/T₂ shows how gas volume changes with temperature at constant pressure. Step-by-step examples included.
Dilution Formula
The dilution formula M₁V₁ = M₂V₂ calculates the new concentration when a solution is diluted. Essential for lab work and solution preparation.
Ideal Gas Law
The ideal gas law PV = nRT relates pressure, volume, temperature, and amount of gas. Master gas calculations with worked examples.
Molarity Formula
The molarity formula M = moles/volume calculates the concentration of a solution. Essential for chemistry lab work and solution preparation.
Mole Calculation Formula
The mole formula n = m/M converts between mass and moles using molar mass. Fundamental for all chemistry stoichiometry calculations.
Percent Composition Formula
The percent composition formula calculates the mass percentage of each element in a compound. Essential for chemical analysis and empirical formulas.
pH Formula
The pH formula pH = -log[H⁺] measures the acidity or basicity of a solution. Learn to calculate pH and hydrogen ion concentration with examples.
Specific Heat Formula
The specific heat formula Q = mcΔT calculates the heat energy needed to change the temperature of a substance. Includes worked examples with common materials.