Molar Mass of (NH4)2SO4 (Ammonium Sulfate)

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Chemical formula Write symbols with a capital letter: CoCl2 is cobalt chloride, COCl2 is phosgene. A hydrate takes a dot: CuSO4·5H2O or CuSO4.5H2O

What is the molar mass of (NH4)2SO4?

Answer

M((NH4)2SO4) ≈
132.13 g/mol

Atomic weights: IUPAC standard values (CIAAW, 2024); the sum is rounded to the decimal places of the least precise one — S: 32.06.

(NH4)2SO4 = 2 × (N + 4 H) + S + 4 O → N 2, H 8, S 1, O 4

Contribution of each element
Element Atoms, n Atomic weight, A n × A, g/mol Mass fraction, w
Nnitrogen214.00728.014 w ≈ 21.20%
Hhydrogen81.00808.0640 w ≈ 6.10%
Ssulfur132.0632.06 w ≈ 24.26%
Ooxygen415.99963.996 w ≈ 48.43%
Σ = 132.134 ≈ 132.13 g/mol w = 100%

Each fraction is rounded on its own, so the printed ones add up to 99.99%; unrounded, they make exactly 100%.

Atomic weights: CIAAW, Abridged Standard Atomic Weights (2024)

Mass fractions of the elements

S 24.26%N 21.20%H 6.10%

Related Calculations

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Recalculate with different values ↑

Molar masses of substances nearby

FormulaM, g/mol
C₆H₁₀O₃ (ethyl acetoacetate)130.143
Xe (xenon)131.29
(NH₄)₂HPO₄ (dibasic ammonium phosphate)132.056
(NH₄)₂SO₄ (ammonium sulfate)132.13
Cs (caesium)132.91
AlCl₃ (aluminum chloride)133.33
LiI (lithium iodide)133.84

FAQ

What is the molar mass of (NH4)2SO4?

M((NH₄)₂SO₄) ≈ 132.13 g/mol

How to calculate the molar mass of (NH₄)₂SO₄?

Add up the atomic weights of all the atoms in the formula: 2 × 14.007 + 8 × 1.0080 + 32.06 + 4 × 15.999 = 132.134 ≈ 132.13 g/mol.

How many grams are in 2 moles of (NH₄)₂SO₄?

m = n × M = 2 mol × 132.13 g/mol = 264.26 g.

See Also