Description
Return species charge equivalents and mass.
Atmospheric analytical quantities require explicit sample/background, mole, charge, reference-pressure and reporting bases. A ratio or balance can be consistent numerically without establishing actual composition, sample representativeness, source identity or a health/regulatory interpretation.
Return species charge equivalents and mass.
When to use this tool
Use One Species Molar Charge Equivalent when checking the stated atmospheric chemical measurement, composition or amount convention.
How to use the tool and how it works
- Enter moles, charge, molarMass. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read signedEquivalents, magnitudeEquivalents, mass. Use the output convention below.
Return species charge equivalents and mass. Require moles >= 0, charge != 0 and molarMass > 0; signedEquivalents = moles*charge, magnitude uses abs(charge), mass = moles*molarMass.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| moles | Moles | Required. Finite number; minimum 0. |
| charge | Supplied signed nonzero whole charge count. | Required. Safe integer. |
| molarMass | Positive mass per mole, using units consistent with the amount and mass bases above. | Required. Finite number; strictly above 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| signedEquivalents | Signed Equivalents | Required. Finite number. |
| magnitudeEquivalents | Magnitude Equivalents | Required. Finite number. |
| mass | Mass | Required. Finite number. |
{
"input": {
"moles": 2,
"charge": -2,
"molarMass": 50
},
"output": {
"signedEquivalents": -4,
"magnitudeEquivalents": 4,
"mass": 100
}
}Limitations and assumptions
- Charge is a supplied nonzero signed whole number; no ion identity or reaction stoichiometry is established.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use calibrated analytical data, compatible units and complete sampling/speciation information; consult appropriate environmental professionals for exposure or regulatory decisions.
References
Similar or alternative tools
- Aerosol Neutralization Equivalent Balance
Return cation/anion equivalent balance.
- Aerosol Charge Equivalent Gap
Calculate supplied anion minus cation charge equivalents in consistent units without assigning chemical species.