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Calculate the number of molecules present in each of the following samples. 4.75mmol of phosphine, 4.75g of phosphine, 1.25x10-2g...

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Chemistry

Calculate the number of molecules present in each of thefollowing samples.

4.75mmol of phosphine,

4.75g of phosphine,

1.25x10-2g of lead(II) acetate, ‍ ‍

1025x10-2 moles of lead(II) acetate, ‍ ‍

a sample of benzene, ‍ , C6H6 which contains a total of 5.40

moles of carbon

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