Chemistry01
Ideal Gas Law
PV = nRT
Links pressure, volume, amount and temperature of a gas — R is the universal gas constant.
Chemistry reference
Chemistry formulas, made clear.
Chemistry connects the invisible world of atoms to what you can measure in the lab. These formulas turn masses, volumes and concentrations into predictions you can trust.
Chemistry02
Molarity
M = n / V
Concentration of a solution: moles of solute (n) per litre of solution (V).
Chemistry03
Density
ρ = m / V
How much mass is packed into a given volume.
Chemistry04
pH of a Solution
pH = −log₁₀[H⁺]
Measures acidity from the hydrogen-ion concentration.
Chemistry05
Number of Moles
n = m / M
Amount of substance from its mass (m) and molar mass (M).
Chemistry06
Percentage Yield
% yield = (actual / theoretical) × 100
How efficient a reaction was compared with the maximum possible product.