find out number of atoms in 5 gram of K2 cr2 O7
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Explanation:
We know that,
No. of atoms/molecules= Mass/Molecular Mass x Avogadro no.
no. of atoms= 5/294 x 6.022 x 10²³(calculate mass of K2Cr2O7)
no. of atoms= 3.31x 10²4 atoms
hope u got it!!!
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