#### Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of NaNO3 is 84.9947 g/mol
Compound name is sodium nitrate

Convert between NaNO3 weight and moles
 Compound Moles Weight, g NaNO3

Elemental composition of NaNO3
ElementSymbolAtomic weightAtomsMass percent
SodiumNa22.98976928127.0485
NitrogenN14.0067116.4795
OxygenO15.9994356.4720

 Mass percent composition Atomic percent composition

Sample reactions for NaNO3
 Equation Reaction type NaNO3 = NaNO2 + O2 decomposition Na + NaNO3 = Na2O + N2 single replacement NaNO3 + PbO = Pb(NO3)2 + Na2O double replacement NaNO3 + H2SO4 = Na2SO4 + HNO3 double replacement Al(OH)3 + NaNO3 = Al(NO3)3 + NaOH double replacement

Formula in Hill system is NNaO3

### Computing molar mass (molar weight)

To calculate molar mass of a chemical compound enter its formula and click 'Compute'. In chemical formula you may use:
• Any chemical element. Capitalize the first letter in chemical symbol and use lower case for the remaining letters: Ca, Fe, Mg, Mn, S, O, H, C, N, Na, K, Cl, Al.
• 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.

Molar mass calculator also displays common compound name, Hill formula, elemental composition, mass percent composition, atomic percent compositions and allows to convert from weight to number of moles and vice versa.

### 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: C[14]O[16]2, S[34]O[16]2.

### 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
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