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24 March, 02:20

How many moles of (NH4) 2S are there in 150 g of (NH4) 2S?

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  1. 24 March, 02:27
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    The answer

    the number of moles can be found easily by using formula of molar mass

    Molar mass = mass (g) / number of moles (mol)

    from this, we can get number of

    number of moles (mol) = mass (g) / Molar mass

    the mass molar of (NH4) 2S:

    M ((NH4) 2S) = (14 + 4x1) x 2 + 32 = 36+32 = 48 g / mol

    number of moles (mol) = 150 g / 48 = 3.12 moles
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