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What weight of NaCl is needed to make 2.0 dm3 of a 1.5M solution? [Na = 23, Cl =...



Dicussion (1)

  • Molar mass of Nacl = 23 + 35.5 = 58.5 g/mol
    Number of moles of Nacl = conc. in mol/dm3
    x vol. in dm3
    = 1.5 * 2.0 = 3.0 moles
    1 mole of NaCl has a weight of 58.5 * 3
    = 175.5g

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