Question

Calculate the relative molecular mass of potassium permanganate

Answer 1

Answer:

KMnO4

where, K=39

Mn=55

O=16

=39+55+4*16

=39+55+64

=150(molicular mass)

Explanation:

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Answer 2

The formula of Potassium permanganate is $KMnO_{4}$

Molecular weights:

$K=39$

$Mn=55$

$O=16$

For calculating the relative molecular mass  $KMnO_{4}$ we have to add the individual molecular masses including the total number of atoms.

$39+55+4\times16$

Molecular mass $=158$

So the relative molecular mass of Potassium permanganate will be $158$

The relative molecular mass of any compound is the total mass of all the elements present in that compound.

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