Chemistry Calculators
Molar mass, density and dilution.
Three tools covering the calculations that come up in every introductory chemistry practical. Each shows its substitution, since that is what gets marked.
Molar mass calculatorAny formula, with brackets and percent composition
Density calculatorSolve for density, mass or volume
Dilution calculatorC1V1 = C2V2, solved for any unknown
Worked molar masses
Common compounds, each with the full working:
H2SO4sulfuric acid — 98.072 g/mol
NaOHsodium hydroxide — 39.997 g/mol
HClhydrochloric acid — 36.458 g/mol
NH3ammonia — 17.031 g/mol
CO2carbon dioxide — 44.009 g/mol
Cl2chlorine gas — 70.900 g/mol
Ca(OH)2calcium hydroxide — 74.092 g/mol
H2Owater — 18.015 g/mol
NaClsodium chloride — 58.440 g/mol
Na2SO4sodium sulfate — 142.036 g/mol
NH4Clammonium chloride — 53.489 g/mol
Na3PO4sodium phosphate — 163.940 g/mol
Lab technique that uses these numbers: microscopy for wet mounts and stains, and dilution for preparing them.