Respuesta :

Answer:

This compound is Ammonium Sulphide and has molar mass 68 g/mol.

Explanation:

  • Molar Mass : It is the mass of 1 mole of the substance and in grams.Its units are gram/mole.
  • It is numerically equal to mass of the substance in atomic mass units

How to calculate Molar mass :

[tex](NH_{4})_{2}S = 2(atomic\ mass\ of\ N + 4\times mass\ of\ H ) +atomic\  mass\ of\ S[/tex]

[tex](NH_{4})_{2}S = 2(14 + 4(1) ) + 32[/tex]

[tex](NH_{4})_{2}S = 2(14 + 4 ) + 32[/tex]

[tex](NH_{4})_{2}S = 2(18) + 32[/tex]

[tex](NH_{4})_{2}S = 36 + 32[/tex]

[tex](NH_{4})_{2}S = 68 [/tex] grams/mole

Molar mass of Ammonium sulphide is 68 g/mol

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