Opmerking: Integers (gehele getallen, zonder een komma of machtsnotatie), worden als nauwkeurig beschouwd tot aan 15 cijfers. Daarnaast kan je hiermee duizenden paren omrekenen, waaronder versnelling, oppervlakte, elektriciteit, energie, kracht, lengte, licht, massa, massadebiet, dichtheid, soortelijk volume, vermogen, druk, spanning, temperatuur, tijd, krachtmoment, snelheid, viscositeit, volume en capaciteit, volumedebiet en meer! Je kan deze online omrekentool gebruiken om een paar honderd eenheden (waaronder metrische, Britse en Amerikaanse eenheden) om te rekenen in 76 categorieën. You can enter the formula and check.ĭit artikel is geschreven door Anatoly Zolotkov Our calculator does the same calculation. Finding the molar mass by means of calculating the sum of the atomic weight of the atoms, which form the compound multiplied by their numbers.įor example, let us calculate the molar mass of the acetic acid.Counting the number of atoms of each element in the compound.Finding the atomic masses of elements in the periodic table.The molar mass of a substance is calculated using three steps: Though molecular and atomic mass values are dimensionless, they are given the unit dalton (Da) or unified atomic mass unit (u), which is approximately the mass of a single proton or neutron and is numerically equivalent to 1 g/mol. Molecular mass is a dimensionless quantity numerically equal to the molar mass. Molecular mass (older name molecular weight) is the mass of a molecule calculated as the sum of the mass of each atom in the molecule multiplied by the number of atoms of that element in the molecule. However, chemists almost always express molar masses in g/mol for convenience. In SI, the unit for molar mass is kg/mol. In other words, it is the mass of one mole of a particular substance. The molar mass is a physical property, which is defined as the mass of a substance divided by its amount of substance in moles. One mole of pure carbon-12 has a mass of exactly 12 grams. The mole as the unit of measurement for the amount of substance is one of the seven base units of the International System of Units (SI). In other words, the mole is the amount of substance equal in mass to the combined mass in atomic mass units of the atoms of molecules of the substance multiplied by the Avogadro constant or Avogadro number. An elementary entity may be an atom, a molecule, an ion, an electron, any other particle or specified group of particles.Īvogadro constant N A = 6.02214076×10²³ mol⁻¹ The amount of substance, symbol n, of a system is a measure of the number of specified elementary entities. This number is the fixed numerical value of the Avogadro constant, N A, when expressed in the unit mol⁻¹ and is called the Avogadro number. One mole contains exactly 6.02214076×10²³ elementary entities. The mole, symbol mol, is the SI unit of the amount of substance. The mole is used to express the amounts of reactants and products of chemical reactions. In chemistry, it is important to measure their amounts accurately. Select “Molecular Weight” from the drop down menu titled “Calculate”.All substances consist of atoms or molecules. atoms, molecules etc.) contained within that mass. Number of constituent particles of the substance (i.e.Select “Mass” from the drop down menu titled “Calculate”. Number of constituent particles of the substance i.e.Select “Moles” from the drop down menu titled “Calculate”. In each mode, this mol calculator takes different inputs and produces a range of results as shown below: To Calculate Moles: This calculator works in three different modes and these can be accessed from the drop down menu titled “Calculate”. How to Calculate Moles Using this Calculator? If the substance is an element then the output of this calculator will also contain the number of atoms of that element hence, it acts as a grams to atoms calculator as well. This mole conversion calculator also helps you calculate molar mass of a substance using a similar mathematical approach but in less time. The Mole is an amount unit similar to pair, dozen etc. g, lbs, stone, oz, ton etc.) as well as for mole (i.e. This online calculator also enables you to do the following conversions:Ī significant feature of this mole conversion calculator is that it also determines the number of particles (atoms, molecules etc.) of the substance along with handling a large number of measurement units for mass (i.e. An online mole calculator helps you to calculate the number of moles of a substance based on the molecular weight (also called molar mass) and the quantity of that material.
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