Chemistry is the Science of Matter where you learn about a matter’s composition and properties. How a matter is formed and what happens when it reacts with another matter or substance. This online tool of Chemistry calculator will help you to solve a wide range of equations and problems related to Acid-Base Reactions, Buffers, Catalysis, Chemical Equilibrium, Empirical and Molecular Formulas, Electrochemistry, Electrolysis, Electron Quantum Numbers, Gas Laws (Ideal, Dalton’s and Graham’s Law), Ionic/Covalent Bonds, Ions and Molecules, Kinetics, Mass Spectrometry, Nuclear decay, Oxidation-Reduction Reactions, Percentage Composition, Significant Figures and Solution Concentration. Whether you need to calculate the pKa of a solution or just a pH, use WebQC pH calculator to find out. Use the formula of Activation Energy to know a reaction’s activation energy in J/mol instead of Btu/lb mol.