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Sodium sulfate = Na2SO4

To find the molecular mass, add up all the atomic masses of the elements involved. You should reach 142.042 g/mol.

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Na2SO3

This is a really rough approximation based on the atomic numbers in my head....

2 (22.9gNa) + 32gS + 3 ( 16gO) = 125.8g is the molar mass of Sodium sulfite

Approx. 142 grams pr. mole.

Q: What is the formula mass of sodium sulphite?

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The chemical formula of sodium chloride is NaCl.

The formula mass of sodium carbonate, Na2CO3 is 2(23.0)+12+3(16) = 106.0Amount of sodium carbonate = mass of sample / formula mass = 4/106.0 = 0.0377mol

The gram atomic mass of sodium is 22.9898, the formula of the least hydrated form of sodium phosphate is Na3PO4.10 H2O, and the gram formula unit mass of this sodium phosphate is 344.09. Therefore, the mass fraction of sodium in this sodium phosphate is 3(22.9898)/344.09 or about 0.20044, and the grams of sodium in 7.2 grams of this sodium phosphate is 1.44 grams of sodium, to the justified number of significant digits.

Related questions

The chemical formula for tin sulphite is SnSO3.

The chemical formula for calcium sulphite is CaSO3

sodium thiosulphate

Sodium sulphite is the IUPAC name. Its formula is Na2SO3 (NB there are only 3 oxygens in sulfite.

Cs2SO3

Aluminum Sulphite:)

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The chemical formula of sodium chloride is NaCl.

The formula of sodium fluoride is NaF; its gram formula mass is 41.9882.

The chemical formula of sodium hydrogen carbonate is NH4HCO3.The molecular mass is 84,0066 g.

The percentage by mass of sodium (Na) in a formula unit of sodium hydrogen carbonate (NaHCO3) is 27,38 %.