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15 August, 15:51

5. How many moles are in 19 grams of KNO,?

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  1. 15 August, 19:51
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    n = m/M

    n is moles

    m is mass

    M is molar mass

    m=19 grams

    M of KNO = 69g/mol

    now substitute;

    n = 19/69

    n=0.275 moles
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