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5 July, 19:30

How much Na2Co3 is needed to produce 35g of Na2Co3?

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  1. 5 July, 20:39
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    Answer: 0.33 moles

    Explanation:

    Given that,

    Amount of moles of Na2CO3 (n) = ?

    Mass of Na2CO3 in grams = 35g

    For molar mass of Na2CO3, use the molar masses as follows:

    Sodium, Na = 23g;

    Carbon, C = 12g

    Oxygen, O = 16g

    Na2CO3 = (23g x 2) + 12g + (16g x 3g)

    = 46g + 12g + 48g

    = 106g/mol

    Since, n = mass in grams / molar mass

    n = 35g / 106g/mol

    n = 0.33mole

    Thus, 0.33 moles of Na2Co3 is needed to produce 35g of Na2Co3
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