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GintiCalc · Science
Chemistry, astronomy, and environmental calculators — molarity, pH, orbits, and carbon footprints.
ChemBench
Molar mass of any chemical formula (e.g. H2O, C6H12O6, Ca(OH)2).
ChemBench
Percent composition of an element within a chemical formula.
ChemBench
Simplest whole-number ratio formula from elemental masses or percentages.
ChemBench
Percent yield from actual and theoretical reaction yields.
ChemBench
Identify which reactant runs out first in a reaction.
ChemBench
Maximum possible product yield from a limiting reactant's moles.
ChemBench
Molar concentration of a solution from solute mass, molar mass, and volume.
ChemBench
Molal concentration of a solution from solute mass, molar mass, and solvent mass.
ChemBench
Normality (equivalent concentration) from molarity and equivalents per mole.
ChemBench
pH and pOH from hydrogen ion concentration.
ChemBench
Buffer solution pH from pKa and the acid/base concentration ratio.
ChemBench
Solve PV = nRT for pressure given volume, moles, and temperature.
ChemBench
Final pressure from initial pressure/volume and a new volume, at constant temperature.
ChemBench
Final volume from initial volume/temperature and a new temperature, at constant pressure.
ChemBench
Final pressure from initial pressure/temperature and a new temperature, at constant volume.
ChemBench
Final volume from initial volume/moles and a new mole count, at constant pressure and temperature.
ChemBench
Relative effusion rate of two gases from their molar masses.
ChemBench
Reaction rate constant from activation energy, temperature, and the pre-exponential factor.
ChemBench
Activation energy from rate constants measured at two different temperatures.
ChemBench
ΔG from enthalpy, temperature, and entropy — determines reaction spontaneity.