General Chemistry Workbench | Neutron STEM Lab

Interactive workspace initializes in your browser. Engineering method, assumptions, validation, and references are available below.

Engineering reference

General Chemistry: theory, method, and sources

This chemistry workspace publishes 8 governing equations, 6 stated assumptions, 3 documented boundaries, and 3 sources so the numbers it returns can be checked rather than taken on trust.

Calculations run locallyCalculation & source methodology

How this tool works

The workbench separates sixteen foundational chemistry tasks into focused tabs with live diagrams and graphs.

Formula parsing supports grouped formulas and hydrates, while equation balancing uses exact rational arithmetic.

All numerical inputs, imported state, text size, dataset size, and graph sample counts are bounded before calculation.

Calculators and topics covered

general chemistry
stoichiometry
molar mass
gas laws
solutions
acid base
equilibrium
kinetics
electron configuration
VSEPR
molar mass calculator
chemical equation balancer
stoichiometry calculator
limiting reactant calculator

Core equations

\text{moles:}\quad n = \frac{m}{M}\; and\; N = nN_{a}

\text{ideal gas:}\quad \mathrm{PV} = nRT

\text{dilution:}\quad M_{1} V_{1} = M_{2} V_{2}

pH = - log_{10} \left[H^{+}\right]

\text{equilibrium:}\quad Kc = \frac{\left[C\right]^{c} \left[D\right]^{d}}{\left[A\right]^{a} \left[B\right]^{b}}

\text{reaction enthalpy:}\quad \Delta H {}^{\circ} rxn = \sum \nu \Delta H {}^{\circ} f \left(\text{products}\right) - \sum \nu \Delta H {}^{\circ} f \left(\text{reactants}\right)

\text{Arrhenius:}\quad k = Ae^{\frac{- Ea}{RT}}

\text{radioactive decay:}\quad N = N_{0} \left(\frac{1}{2}\right)^{\frac{t}{t \frac{1}{2}}}

Method and assumptions

Assumptions

Atomic masses are standard representative values suitable for educational calculations.
The equation balancer handles molecular equations and does not independently conserve ionic charge or electrons.
Gas-law calculations assume ideal behavior.
Acid–base and titration models use dilute aqueous solutions at 25 °C with Kw = 1.0×10⁻¹⁴.
The equilibrium tab models one reaction of the form aA + bB ⇌ cC + dD using concentrations.
Arrhenius calculations assume the pre-exponential factor and activation energy remain constant over the selected temperatures.

Limitations and design boundaries

Activities, nonideal gases and solutions, polyprotic acid systems, precipitation, electrochemical half-reactions, and detailed quantum-chemical calculations are outside this version.
The visualizations are schematic and are not molecular-dynamics simulations.
Results are educational estimates and are not substitutes for laboratory safety procedures or regulated analytical methods.

Sources and references

Primary sources are preferred for ratings, standards, manufacturer data, and externally defined constants.

Source policy

Brown, LeMay, Bursten, Murphy and Woodward, Chemistry: The Central ScienceStoichiometry, gas laws, solution concentration, and reaction energetics.
Zumdahl and Zumdahl, ChemistryLimiting reagent, percent yield, and empirical formula procedures.
CODATA Internationally Recommended Values of the Fundamental Physical ConstantsValues used for the gas constant and the Avogadro constant.