 # Molar mass of H2S ## ››Hydrogen Sulfide molecular weight

Molar mass of H2S = 34.08088 g/mol

Convert grams Hydrogen Sulfide to moles  or  moles Hydrogen Sulfide to grams

Molecular weight calculation:
1.00794*2 32.065

In chemistry, the formula weight is a quantity computed by multiplying the atomic weight (in atomic mass units) of each element in a chemical formula by the number of atoms of that element present in the formula, then adding all of these products together.

The atomic weights used on this site come from NIST, the National Institute of Standards and Technology. We use the most common isotopes. This is how to calculate molar mass (average molecular weight), which is based on isotropically weighted averages.

This is not the same as molecular mass, which is the mass of a single molecule of well-defined isotopes. For bulk stoichiometric calculations, we are usually determining molar mass, which may also be called standard atomic weight or average atomic mass.

Formula weights are especially useful in determining the relative weights of reagents and products in a chemical reaction. These relative weights computed from the chemical equation are sometimes called equation weights.

If the formula used in calculating molar mass is the molecular formula, the formula weight computed is the molecular weight. The percentage by weight of any atom or group of atoms in a compound can be computed by dividing the total weight of the atom (or group of atoms) in the formula by the formula weight and multiplying by 100.

Using the chemical formula of the compound and the periodic table of elements, we can add up the atomic weights and calculate molecular weight of the substance.

A common request on this site is to convert grams to moles. To complete this calculation, you have to know what substance you are trying to convert. The reason is that the molar mass of the substance affects the conversion. This site explains how to find molar mass.

Finding molar mass starts with units of grams per mole (g/mol). When calculating molecular weight of a chemical compound, it tells us how many grams are in one mole of that substance. The formula weight is simply the weight in atomic mass units of all the atoms in a given formula.

## ››Percent composition by element

 Element Symbol Atomic Mass # of Atoms Mass Percent Hydrogen H 1.00794 2 5.915% Sulfur S 32.065 1 94.085%

## Computing molecular weight (molecular mass)

To calculate molar mass of a chemical compound enter its formula and click ‘Calculate!’. In chemical formula you may use:

• Any chemical element
• Functional groups: D, Ph, Me, Et, Bu, AcAc, For, Ts, Tos, Bz, TMS, tBu, Bzl, Bn, Dmg
• parantesis () or brackets [].
• Common compound names.

Examples of molar mass computations:

NaClCa(OH)2K4[Fe(CN)6]CuSO4*5H2Owaternitric acidpotassium permanganateethanolfructose
.

To calculate molecular weight of a chemical compound enter it’s formula, specify its isotope mass number after each element in square brackets.

Examples of molecular weight computations:

CO2SO2

• Molecular mass (molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12)
• Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.

Weights of atoms and isotopes are from
NIST article

Related: Molecular weights of amino acids

## Hydrogen sulfide | H2S | ChemSpider

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Escherichia coli metabolite

Any bacterial metabolite produced during a metabolic reaction in Escherichia coli.

signalling molecule

A molecular messenger in which the molecule is specifically involved in transmitting information between cells. Such molecules are released from the cell sending the signal, cross over the gap between cells by diffusion, and interact with specific receptors in another cell, triggering a response in that cell by activating a series of enzyme controlled reactions which lead to changes inside the cell.

toxin

Poisonous substance produced by a biological organism such as a microbe, animal or plant.

metabolite

Any intermediate or product resulting from metabolism. The term ‘metabolite’ subsumes the classes commonly known as primary and secondary metabolites.

genotoxin

A role played by a chemical compound to induce direct or indirect DNA damage. Such damage can potentially lead to the formation of a malignant tumour, but DNA damage does not lead inevitably to the creation of cancerous cells.

## Molar Mass, Molecular Weight and Elemental Composition Calculator

Compound name is hydrogen sulfide
Formula in Hill system is H2S

Elemental composition of H2S:

 Molar mass of H2S is 34.0809 g/mol
Symbol Element Atomic weight Atoms Mass percent
H Hydrogen 1.00794 2 5.9150 %
S Sulfur 32.065 1 94.0850 %

### Computing molar mass (molar weight)

To calculate molar mass of a chemical compound enter its formula and click ‘Calculate!’. In chemical formula you may use:

• Any chemical element
• Functional groups: D, Ph, Me, Et, Bu, AcAc, For, Ts, Tos, Bz, TMS, tBu, Bzl, Bn, Dmg
• parantesis () or brackets [].
• Common compound names.

Examples of molar mass computations:
NaCl,
Ca(OH)2,
K4[Fe(CN)6],
CuSO4*5H2O,
water,
nitric acid,
potassium permanganate,
ethanol,
fructose.

### Computing molecular weight (molecular mass)

To calculate molecular weight of a chemical compound enter it’s formula, specify its isotope mass number after each element in square brackets.
Examples of molecular weight computations:
CO2,
SO2.

### Definitions of molecular mass, molecular weight, molar mass and molar weight

• Molecular mass (molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12)
• Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.

Weights of atoms and isotopes are from NIST article.

Related: Molecular weights of amino acids

molecular weights calculated today

## Molecular Weight — Common Substances

The molecular weight of a substance, also called the molar mass, M, is the mass of 1 mole of that substance, given in M gram.

In the SI system the unit of M is [kg/kmol] and in the English system the unit is [lb/lbmol], while in the cgs system the unit of M is [g/mol]. Molecular weight is represented by thesame number in all unit systems regardless of the system used. For this reason, in many cases the unit for the molecular weight is not mentioned; however, one must realize that it is not a dimensionless parameter.

The molecular weight of a pure compound is determined from its chemical formula and the atomic weights of its elements. The atomic weights of the elements found in organic substances are C = 12.011, H = 1.008, S = 32.065, O = 15.999, and N = 14.007.

Example: The molecular weight of ethanol (C2H5OH)
To calculate the molecular weight of ethanol, the molecular weight of each atom in the molecule is summed:

Methanol = 2*12.011[kg/kmol] 6*1.008[kg/kmol] 1*15.999 [kg/kmol] = 46.069 [kg/kmol]

See also Physical data for hydrocarbons, Physical data for alcohols and carboxylic acids, Physical data for organic nitrogen compounds and Physical data for organic sulfur compounds

Substance

Molecular Weight
[kg/kmol]
[g/mol]
[lb/lbmol]

Acetylene, C2H2 26.038
Air 28.966
Ammonia (R-717) 17.02
Argon, Ar 39.948
Benzene 78.114
n — Butane, C4H10 58.124
1-Butene 56.108
cis -2-Butene 56.108
trans-2-Butene 56.108
Butylene 56.06
Carbon Dioxide, CO2 44.01
Carbon Disulphide 76.13
Carbon Monoxide, CO 28.011
Chlorine 70.906
Cyclohexane 84.162
Cyclopentane 70.135
n — Decane 142.286
Deuterium 2.014
2,3 — Dimetylbutane 86.178
2,2 — Dimethylpentane 100.205
Diisobutyl 114.232
Duoderane 170.21
Ethane, C2H6 30.070
Ethene 28.05
Ethyl Alcohol 46.07
Ethylbenzene 106.168
Ethyl Chloride 64.515
3 — Ethylpentane 100.205
Ethylene, C2H4 28.054
Fluorine 37.996
Helium, He 4.002602
n — Heptane 100.205
n — Hexane 86.178
Hydrochloric Acid 36.47
Hydrogen, H2 2.016
Hydrogen Chloride 36.461
Hydrogen Sulfide 34.076
Hydroxyl, OH 17.01
Isobutane (2-Metyl propane) 58.124
Isobutene 56.108
Isooctane 210.63
Isopentane 72.151
Isoprene 68.119
Isopropylbenzene 120.195
Krypton 83.80
Methane, CH4 16.043
Methyl Alcohol 32.04
Methyl Butane 72.15
Methyl Chloride 50.488
Methylcyclohexane 98.189
Methylcyclopentane 84.162
2 — Methylhexane 100.205
2 — Methylpentane 86.178
Natural Gas 19.00
Neon, Ne 20.179
Neohexane 86.178
Neopentane 72.151
Nitric Oxide, NO 30.006
Nitrogen, N2 28.0134
Nitrous Oxide, N2O 44.013
n — Nonane 128.259
n — Octane 114.232
Oxygen, O2 31.9988
Ozone 47.998
n — Pentane 72.151
Pentylene 70.08
Propane, C3H8 44.097
Propene 42.081
Propylene 42.08
R-11 137.37
R-12 120.92
R-22 86.48
R-114 170.93
R-123 152.93
R-134a 102.03
R-611 60.05
Styrene 104.152
Sulfur 32.02
Sulfur Dioxide (Sulphur Dioxide) 64.06
Sulfuric Oxide 48.1
Toluene, toluol 92.141
Triptane 100.205
Xenon 131.30
o — Xylene, xylol 106.168
Water Vapor — Steam, H2O 18.02

## What is the mass of hydrogen sulphide 34?

Yes,The mass of Hydrogen Sulphide(H2S) is 34.

Explanation:-

H2S means Mass of 2 atoms of Hydrogen Mass of 1 atom of Sulphide.

Now, Mass of 2 atoms of Hydrogen = 2×1={amp}gt;2g

And, Mass of 1 atom of Sulphide = 1×32={amp}gt;32g

Add them…and we will get the mass of Hydrogen Sulphide as 34g.

Hope it helps

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