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2 June, 09:44

How many atoms of carbon are contained in 47.6 g of al2 (co3) 3? the molar mass of al2 (co3) 3 is 233.99 g/mol?

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  1. 2 June, 12:35
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    The molar mass of Al₂ (CO₃) ₃is 233.99 g/mol

    It means 233.99 grams of Al ₂ (CO₃) ₃ are in one mole

    And moles in 47.6 g = 47.6/233.99 = 0.203 moles

    Now we know that we have 0.203 moles of Al₂ (CO₃) ₃

    In one mole of Al₂ (CO₃) ₃, we have 3 moles of carbon

    To find the number of moles of carbon in a 0.203 moles of Al₂ (CO₃) ₃, we must multiply this by the 3 moles of carbon

    0.203 x 3 = 0.609 moles of carbon

    Within one mole of carbon, we have 6.022 x 10 ²³ atoms. So, to find the amount of atoms within 0.609 moles of carbon, we must multiply the 0.609 moles by 6.022 x 10²³ atoms.

    So, the number of carbon atoms present in 47.6g of Al ₂ (CO₃) ₃ = 0.609 x 6.022 x 10²³ = 3.667 x 10²³ atoms.
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