Molar Mass, Molecular Weight and Elemental Composition Calculator

Molar mass of LiBr is 86.8450 g/mol
Compound name is lithium bromide

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

Elemental composition of LiBr
ElementSymbolAtomic weightAtomsMass percent
LithiumLi6.94117.9924
BromineBr79.904192.0076

 Mass percent composition Atomic percent composition

Sample reactions for LiBr
 Equation Reaction type AgNO3 + LiBr = AgBr + LiNO3 double replacement LiBr + Cl2 = LiCl + Br2 single replacement LiBr + Co(SO3)2 = Li(SO3)2 + CoBr double replacement LiBr + Pb(NO3)2 = LiNO3 + PbBr2 double replacement LiBr + Co(SO3)2 = Li(SO3) + CoBr2 double replacement

Formula in Hill system is BrLi

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.