31Show that, the ratio of number ofmolecules present in equal masses o

1.	31Show that, the ratio of number ofmolecules present in equal masses of twosubstances having different molecularmasses is equal to the reciprocal of the ratioof their molecular masses.
Answer» Let m = mass , M1 & M2 are the molecular masses .. and Na1 and Na2 = moles of different substances ( no. of molecules) we know that masses are equal.., som = M1Na1 and m = M2Na2 so, M1Na1 = M2Na2 so ratio of no. of molecules are Na1/Na2 = M2/M1.

31Show that, the ratio of number ofmolecules present in equal masses of twosubstances having different molecularmasses is equal to the reciprocal of the ratioof their molecular masses.

Answer»

Let m = mass , M1 & M2 are the molecular masses .. and Na1 and Na2 = moles of different substances ( no. of molecules)

we know that masses are equal.., som = M1*Na1

and m = M2*Na2

so, M1*Na1 = M2*Na2

so ratio of no. of molecules are Na1/Na2 = M2/M1.

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31Show that, the ratio of number ofmolecules present in equal masses of twosubstances having different molecularmasses is equal to the reciprocal of the ratioof their molecular masses.

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