Molecular weight of compounds and chemical elements

Atomic mass, often confused with molar mass - it is a mass:
- one molecule of a chemical compound (e.g. O₂, H₂O),
- a formal unit of a given compound (e.g., NaCl with an ionic and not a molecular structure),
- one other chemical species (e.g. ion CH₃COO⁻).
The molecular weight unit in the SI system is kg. However, much more commonly the molecular weight is expressed in atomic mass units „u” (equal to 1/12 of the atomic mass of the carbon isotope ¹²C) or „Da” (dalton).

In practice, due to technical difficulties in expressing actual molecular weights, the so-called relative molecular masses - which are calculated as the sum of the relative atomic masses of the atoms that make up it. Relative molecular mass is a dimensionless quantity which should be understood as a multiple of 1/12 of the atomic mass of the carbon isotope ¹²C.

In the case of populations of molecules with different molecular weights (e.g., polymers, gas mixtures, etc.), the concept of average molecular weight (also called molar) is used. The average molar mass can be calculated as the arithmetic mean or geometric mean weight of individual molecules in the population.

Users of this calculator also used

Molecular weight of gas

Use this calculator to calculate the molecular weight of gas.

Daltons law of partial pressures

Using the calculator you can calculate the partial pressure according to Daltons law.

ROT47 cipher - encoder / decoder

ROT47 cipher online encoder and decoder. Encrypt and decrypt any cipher created in a ROT47 cipher. You can use any shift and additionally a key for more precise text encoding.

CAPM (capital asset pricing model) SML (security market line) form - valuation of capital assets

The CAPM calculator can be used to calculate the cost of equity, to evaluate the investment effectiveness of collective investment funds (open-end investment funds, pension funds, etc.), to study the efficiency of the stock market, etc.
The CAPM calculator in the form of SML allows you to calculate the expected rate of return on all portfolios, not only effective ones, as well as individual stock market shares.

Molecular weight of compounds and chemical elements - calculator.

Users of this calculator also used

Molecular weight of gas

Daltons law of partial pressures

ROT47 cipher - encoder / decoder

CAPM (capital asset pricing model) SML (security market line) form - valuation of capital assets

Four-square cipher - encoder / decoder

Percentage Calculator

Molar concentration

Online calculator