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21 January, 04:13

During the winter months, many locations experience snow and ice storms. It is a common practice to treat roadways and sidewalks with salt, such as CaCO3. If a 18.1 kg bag of CaCO3 is used to treat the sidewalk, how many moles of CaCO3 does this bag contain?

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  1. 21 January, 05:44
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    180.845 mol

    Explanation:

    Molar mass of Ca: 40,078 g/mol

    Molar mass of C: 12,0107 g/mol

    Molar mass of O: 15,999 g/mol

    Molar mass of CaCO3: (40,078+12,0107+3*15,999) 100,0857 g/mol

    The number of moles = mass of bag in g : molar mass of CaCO3

    ⇒ n = (18.1*1000) : 100,0857 = 180.845 mol
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