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3 August, 03:41

What mass of oxygen is contained in a 5.8 g sample of NaHCO3?

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  1. 3 August, 03:59
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    Molar mass of NaHCO3 is 83.9. moles of Na ... O3 = 5.8/83.9

    =0.0691

    for every mole of Na ... O3 there are 3 O

    n (O) = n (NaHCO3) x3

    = 0.207

    mass of O is the moles x molar mass (16)

    therefore the mass of O is 3.3 grams
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