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Identify the solvent, solute, and process. Calculate the molar mass of acetylcysteine (C5H9O3NS).

Chemistry

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  1. Le solvant utilisé est l'eau, car la solution est dite "aqueuse". Le solvant est la substance qui dissout le soluté. Réponse : L'eau

  2. Le soluté est l'acétylcystéine, car c'est la substance qui est dissoute. Réponse : L'acétylcystéine

  3. Ce mode de préparation de solution, qui consiste à dissoudre une substance solide dans un solvant, s'appelle la dissolution. Réponse : La dissolution

  4. Calculer la masse molaire M(C5H9O3NS)M(\text{C}_5\text{H}_9\text{O}_3\text{NS}) de l'acétylcystéine. Step 1: Écrire la formule de la masse molaire.

    M(C5H9O3NS)=5×M(C)+9×M(H)+3×M(O)+1×M(N)+1×M(S)M(\text{C}_5\text{H}_9\text{O}_3\text{NS}) = 5 \times M(\text{C}) + 9 \times M(\text{H}) + 3 \times M(\text{O}) + 1 \times M(\text{N}) + 1 \times M(\text{S})

    Step 2: Substituer les masses molaires atomiques données et calculer.

    M(C5H9O3NS)=(5×12)+(9×1)+(3×16)+(1×14)+(1×32)M(\text{C}_5\text{H}_9\text{O}_3\text{NS}) = (5 \times 12) + (9 \times 1) + (3 \times 16) + (1 \times 14) + (1 \times 32)
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