calculate the numbers of mole in 5.6 gram Fe
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56 grams of Fe contains the number of molecules=6.022×10^23
so,
1gram of Fe contains the number of molecules=(6.022×10^23)÷56
5.6 grams of Fe contains the number of molecules=(6.022×10^23×5.6)÷56
=6.022×10^22
so,
1gram of Fe contains the number of molecules=(6.022×10^23)÷56
5.6 grams of Fe contains the number of molecules=(6.022×10^23×5.6)÷56
=6.022×10^22
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