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A piece of copper weighs 0.634g. How many atoms of copper does it contain? |
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Answer» Solution :Gram -ATOMIC MASS of COPER =63.5g Number of moles in 0.635 g of copper `=(0.635)/(63.5)=0.01` Number of copper atoms in one MOLE `=6.02xx10^(23)` Number of copper atoms in 0.01 moles `=0.01xx6.02xx10^(23)` `=6.02xx10^(21)` |
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