Chemistry verkfæri

Concentration Converter

Convert molarity, molality, wt%, vol%, and ppm with explicit assumptions. Enter density and molar mass only when needed, choose the ppm basis, and batch-convert pasted rows.

Efnaeiningabreytir

Umbreyttu algengum efnaeiningum fyrir þrýsting, hitastig, styrk (ppm↔mg/L), seigju (cP↔mPa·s) og rúmmál á einum skjá. Þar eru nálgunar- og nákvæmnishamir, formúlur, afritunaraðgerðir, staðbundinn ferill og deilanlegar slóðir.

Dilution Reiknivél

Calculate birgðir and solvent volumes with C1V1=C2V2 from birgðir concentration, target concentration, and final volume. Generate serial dilution taflas from step count and factors, with uL/mL/L switching, copy buttons, and rounding suggestions.

Density Calculator

Convert mass and volume using density. Supports units such as kg/L, g/mL, and lb/gal(US). Optional coefficient-based temperature correction, formula display, copy actions, and batch paste are included.

Stoichiometry Reiknivél

Calculate limiting reagent, excess amount, theoretical yield, and percent yield from reaction coefficients and inntak quantities in g, mol, or solution M×L. The page uses user-entered coefficients instead of automatic balancing.

Solution Recipe Reiknivél

Calculate required amounts in g and mL from the target concentration and final volume. Supports purity correction, multi-component recipes, x2/x10 scaling, print, CSV export, and shareable URLs.

Batch Scale-Up Reiknivél

Scale a batch while preserving formulation ratios. Adjust for loss and yield, round to a minimum charge increment, yfirferð deltas, and export the niðurstaða as CSV or JSON with browser-only save.

Measurement Uncertainty Reiknivél

Estimate concentration and dilution uncertainty from weighing error, volume error, and related inntaks. Convert tolerance notation to standard uncertainty, choose k factors such as k=2, yfirferð the main contributors, and copy a skýrsla-ready úttak.

Molecular Weight Reiknivél

Enter a chemical formula such as C6H12O6 to calculate molar mass and elemental composition by mass. Supports parentheses and hydrates such as CuSO4·5H2O, plus copy, CSV, and shareable URLs.

Significant Figures and Rounding Checker

Suggest skýrslaing precision and notation from measured values, resolution, standard deviation, and rounding rules. Includes LOD/LOQ skýrslaing options, copy actions, presets, saga, and shareable URLs.

pH / pOH Reiknivél

Convert H+, pH, and pOH with a simple reiknivél for education and svið notes, with formulas and practical cautions.

Formulation Ratio Reiknivél

Build formulation taflas from weight or volume ratios, scale to a target total, check min/max tolerances, handle density conversion and rounding, and export the niðurstaða as CSV, TSV, or PDF.