# Isotopic Pattern of a Compound

## Form for calculating the mass, the elementary as well as the isotopic, percentage composition of a molecule.

The calculation of the composition using the entered formula is based on the current values of the relative atomic weights and the isotope masses as well as the average isotopic abundances.

**Data output** for

C_{6}H_{12}O_{6} - Number of elements involved: 3

### Molecular weight:

The molar mass is **M**_{r} = 180.156 grams per mole (g mol^{-3})

.

### Percent composition:

Mass elemental composition of the compound C_{6}H_{12}O_{6}, calculated based on molecular weight.

**Atom****Number****Element**

Atomic weight A_{r}***Total****Percentage**C6**Carbon**

12.011 u

(12.0096 u to 12.0116 u)72.066 u**40.002 %**H12**Hydrogen**

1.008 u

(1.00784 u to 1.00811 u)12.096 u**6.714 %**O6**Oxygen**

15.999 u

(15.99903 u to 15.99977 u)95.994 u**53.284 %*** Where appropriate, the relative standard atomic weight interval is given.

### Further data

The amount of substance in one kilogram of the substance is n = 5.551 mol.

The amount of substance in one gram of the substance is n = 0.006 mol.

### Isotopic Composition

Overview of the natural isotopes or nuclides involved in the chemical compound C_{6}H_{12}O_{6}

Monoisitopic mass: 180,0633881064 Da - related to ^{12}C_{6}^{1}H_{12}^{16}O_{6}.

**Element**

(Percentage)**Isotope****Name of Isotope****Isotopic mass**

Half-life, (proportion of the element)**Percentage**

of the total mass**C**

(40 %)^{12}CCarbon-1212.00000000000 u

stable (98.94 %)**39.57798 %**^{13}CCarbon-1313.003354835(2) u

stable (1.06 %)**0.42402 %**^{14}CCarbon-1414.003241988(4) u

5700(30) years**traces****H**

(6.71 %)^{3}HHydrogen-33.01604928132(8) u

12.32(2) years**traces**^{1}HHydrogen-11.0078250322(6) u

stable (99.99 %)**6.71351 %**^{2}HHydrogen-22.0141017781(8) u

stable (0.01 %)**0.00067 %****O**

(53.28 %)^{16}OOxygen-1615.994914620(2) u

stable (99.757 %)**53.15434 %**^{18}OOxygen-1817.999159613(6) u

stable (0.205 %)**0.10923 %**^{17}OOxygen-1716.999131757(5) u

stable (0.03835 %)**0.02043 %**

## Note

This form calculates the percentage composition, the molecular mass (the molecular weight), the monoisotopic mass, the amount of substance per kilogram and the isotopic composition of a chemical compound with a given molecular formula; the latter corresponds to the natural isotope pattern.

The output values are 'raw values'. and should be truncated or rounded to a reasonable precision before use. This applies especially to the atomic weights, which are now also shown in intervals. The most recent values are used.

Only the formula without special characters, brackets, etc. is permitted here.

## References:

[1] - **Relative molecular mass, M**_{r}:

Definition, IUPAC *Gold Book*, DOI 10.1351/goldbook.

**Last update: **2023-12-01

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