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13 November, 15:09

340.5 g of sodium bromide To moles of sodium bromide

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  1. 13 November, 15:26
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    Answer: 3.3 moles

    Explanation:

    Sodium bromide has a chemical formula of NaBr.

    Given that:

    Mass of NaBr in grams = 340.5g

    Number of moles of NaBr = ?

    For Molar mass of NaBr, use atomic mass of sodium Na = 23g, bromine Br = 79.9g

    So, molar mass of NaBr = (23g + 79.9g)

    = 102.9g/mol

    Recall that number of moles = (mass in grams/molar mass)

    No. of moles = 340.5g/102.9g/mol

    = 3.3 moles

    Thus, 340.5 g of sodium bromide gives 3.3 moles of sodium bromide
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