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1 January, 02:37

Moles of Zn (NO3) 2 in 131.50g of this substance.

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  1. 1 January, 03:59
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    number of moles = mass / molecular mass

    mass=131.50g

    molecular mass of Zn (NO3) 2 = 189.39 g/mol

    number of moles = 131.50 g/189.39 g/mol = 0.69433 mol
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