Kalkulator
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Hasil dioptimalake nalika sampeyan ngetik.
Ngendi kalkulator iki
Molarity is the most common way chemists express concentration: the number of moles of solute dissolved per litre of solution, M = moles / litres, with units of mol/L (also written M). The moles of solute come from its mass divided by its molar mass, moles = mass ÷ molar mass, so the full relationship ties together mass, molar mass, volume and concentration. This calculator solves for any one of molarity, mass of solute, solution volume or molar mass, and accepts the volume in litres or millilitres.
As a worked example, dissolving 58.44 g of table salt (NaCl, molar mass ≈ 58.44 g/mol) in enough water to make 1 litre gives 58.44 / 58.44 = 1 mole in 1 L, a 1 M solution. Dissolve 117 g of NaCl instead and you have 2 moles, which in 1 L is a 2 M solution or, in 500 mL, a 4 M solution. Working backwards, to make 250 mL of 0.1 M NaCl you need 0.1 × 0.25 = 0.025 mol, i.e. 0.025 × 58.44 ≈ 1.46 g.
Molarity is the working currency of the lab bench — preparing standard solutions, diluting stock reagents, running titrations and stoichiometry, and mixing buffers all depend on it. Note that it is defined per litre of final solution, not per litre of solvent, so you dissolve the solute and then top up to the target volume rather than adding it to a pre-measured litre of water.
Takon kang asring diajukake
Apa iku molaritas?
Molarity (M) inggih punika mol solut per liter larutan. Larutan 58. 44 g NaCl (1 mol) ing 1 liter ngasilaken larutan 1 M.
Apa kang dadi sebabé?
Ing taun 2000, 117 g NaCl iku 117 / 58.44 =2mol, lan 117 g NaCl iku 117 / 58.44 = 2.
Apa sing kudu dilakoni kanggo ngrampungaké masalah iki?
Moles needed = molarity × volume in litres, then mass = moles × molar mass. For 250 mL of 0.1 M NaCl that is 0.1 × 0.25 = 0.025 mol, about 1.46 g. Set "solve for" to mass to have the calculator do it.
Ing banyu kang adhem, 1 liter banyu bisa ngemot 100 gram zat.
Per liter saka larutan rampung. Larut solut, banjur tambahake pelarut nganti tandha kanggo tekan volume target - aja mung tambahake menyang liter banyu, sing bakal menehi volume sing luwih gedhe lan konsentrasi sing luwih endhek.
Apa bedane antarané molarity lan molality?
Molarity iku mol per liter larutan lan ngéwahi akèh karo suhu amarga volume ngéwahi. Molality iku mol per kilogram pelarut lan ora gumantung karo suhu. Alat iki ngitung molarity.
Apa aku bisa ngresiki barang-barangku?
Use C₁V₁ = C₂V₂: the moles stay constant, so concentration times volume before equals after. To make 1 L of 0.5 M from 2 M stock you need 0.5 × 1 / 2 = 0.25 L of stock topped up to 1 L.
API — gunakake kalkulator iki saka kode
Panggenan kalkulator iki minangka titik pungkasan JSON gratis - ora ana kunci sing dibutuhaké. Kirimi nilai medan ing ngisor iki minangka parameter pitakonan utawa JSON. Anything you omit uses the same default this page is pre-filled with; an unknown parameter is a 400, never a silent zero. Waca dokumen API lengkap →
Titik pungkasan
GET https://calculator.free/api/v1/molarity/curl
curl "https://calculator.free/api/v1/molarity/?solve=molarity&mass=58.44&molar_mass=58.44&volume=1"JavaScript fetch()
const r = await fetch(
"https://calculator.free/api/v1/molarity/?" + new URLSearchParams({
"solve": "molarity",
"mass": "58.44",
"molar_mass": "58.44",
"volume": "1"
}));
const data = await r.json();
console.log(data.results);Kajaba iku, ana uga sing ora bisa gawé gawéan, kaya ta dokter, insinyur, lan liya-liyané.