Definieer Molekulêr Gewigte
Molar mass of a chemical formula, with a per-element mass breakdown.
Resultate werk op soos jy tik.
Aangaande hierdie sakrekenaar
The molecular weight, or molar mass, of a compound is the mass of one mole of it in grams per mole, found by adding up the standard atomic weight of every atom in its chemical formula. This molecular weight calculator parses a formula you type — element symbols with optional subscripts, nested parentheses, and a leading multiplier for hydrates — and sums the atomic weights, drawing on IUPAC standard values (hydrogen 1.008, carbon 12.011, oxygen 15.999, and so on).
As a worked example, water H2O contains two hydrogen atoms and one oxygen: 2 × 1.008 + 15.999 = 18.015 g/mol. Glucose C6H12O6 sums to 6 × 12.011 + 12 × 1.008 + 6 × 15.999 = 180.156 g/mol. The calculator also returns a per-element breakdown showing each element’s atom count, atomic weight, mass subtotal and percentage of the total mass — so for water it reports oxygen as about 88.8% of the mass and hydrogen the rest.
The parser understands parentheses and hydrate dot-notation, so Ca(OH)2 is read as one calcium, two oxygen and two hydrogen (74.09 g/mol) and CuSO4.5H2O includes the five waters of crystallisation (249.68 g/mol). Molar mass is the essential bridge between the mass you weigh on a balance and the moles a reaction needs, so it underlies solution preparation, reaction stoichiometry, yield calculations and converting between grams and moles at every step of quantitative chemistry.
Dikwels gevra vrae
Hoe word molekulêre gewig bereken?
Multiply each element’s atomic weight by how many atoms of it the formula contains, then add them up. Water (H₂O) is 2 × 1.008 + 15.999 = 18.015 g/mol.
Watter formule sintaks word ondersteun?
Elemente met opsionele tel, geneste hakies en'n vername veelvoudige bilium vir hidrolitere. CaiumOH)2 word as een kalsium gelees, twee suurstof en twee waterstof; CuSO 4,5H2O bevat vyf water.
Wat is die verskil tussen molekulêre gewig en molarmassa?
Hulle is ongetwyfeld dieselfde waarde.'n Molekulêre gewig (of molekulêre massa) is'n relatiewe figuur in die wand van een molekule; die mol in gram per mol is die massa van'n mol.'n Mens kan albei net soveel ag slaan op die gedetaileerde atoomgewigte.
Hoe gaan ek in'n hidrokraan soos kopersulfaatpentahidraat?
Use a dot before the water group: CuSO4.5H2O. The leading 5 multiplies the H2O, adding five waters of crystallisation, and the calculator returns 249.68 g/mol for that hydrate.
Wat is die persentasieposisie wat dit toon?
For each element it gives that element’s share of the total mass. In water, oxygen is about 88.8% and hydrogen 11.2%; in glucose, carbon is 40.0%, hydrogen 6.7% and oxygen 53.3% — useful for empirical-formula and purity work.
Waarom het my formule nie ontleed nie?
Elke element simbool moet reg geëïer word (Co is cobalt, maar CO is koolstof plus suurstof), en slegs werklike elemente word aanvaar. Bevestig vir kleinletters simbole, ongeëwenaarde hakies of timpos as jy sien 'n leesfout.
Kan ek die molar - massa van'n poliatiese ui of groep bereken?
Yes — wrap the group in parentheses with its multiplier, like Ca(OH)2 or (NH4)3PO4. The parser expands the parentheses and multiplies the enclosed atoms, so ammonium phosphate sums correctly across all three ammonium groups.
API ← gebruik hierdie sakrekenaar van kode
Bel hierdie sakrekenaar as 'n vry JSON-punt takies wat nodig is. Stuur die veldwaardes hieronder as navraag parameters of JSON. Enigiets wat jy weglaat gebruik dieselfde verstek hierdie bladsy is vooraf gevul met; 'n onbekende parameter is 'n 400, nooit' n stil nul. Lees die volle API docs →
Einde punt:
GET https://calculator.free/api/v1/molecular-weight/curl
curl "https://calculator.free/api/v1/molecular-weight/?formula=H2O"JavaScript fetch()
const r = await fetch(
"https://calculator.free/api/v1/molecular-weight/?" + new URLSearchParams({
"formula": "H2O"
}));
const data = await r.json();
console.log(data.results);Die resultate is skattings van algemene leiding, nie net finansiële, mediese of belastingvoorligting nie.