Calculate the total number of atom present in 10g of Al2O3
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no. of moles = given mass / molecular mass
molecular mass of Al2O3 = 100
no. of moles = 10/100 = 1/10
no. of molecules = moles x avagadros no. = 1/10 x 6.022 x 10^23 = 6.022 x 10^22
no. of atoms = atomicity x molecules
atomicity = 5
no. of atoms = 5 x 6.022 x 10^22 = 30.11 x 10^22 ........ ANSWER
molecular mass of Al2O3 = 100
no. of moles = 10/100 = 1/10
no. of molecules = moles x avagadros no. = 1/10 x 6.022 x 10^23 = 6.022 x 10^22
no. of atoms = atomicity x molecules
atomicity = 5
no. of atoms = 5 x 6.022 x 10^22 = 30.11 x 10^22 ........ ANSWER
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