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18 May, 10:08

How many total atoms are in 0.330 g of P2O5?

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  1. 18 May, 13:13
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    A) covert 0.330g to moles by dividing by molar mass of P2O5 ... Let's call this Y moles

    B) 1 mole of anything contains the Avogradro Number of molecules

    So here it is 6.02 x 10^23 x Y molecules

    C) work out how many atoms in each molecule 2P + 5O total 7

    So multiply answer to B by 7 to get final answer
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