Question

A compound of Mg contains 6% of Mg by mass.If the minimum molar mass of the compound is n*100g/mol.Then what is the value of 'n'?

Answer 1

let the mass of the compound of magnesium be 'x'

now, 
          6% of (x) =24
                     
                    6x = 2400
                      
                      x = 400 grams

Now 400 grams is the minimum molar mass of the compound as we assumed that there is only 1 Mg atom in 1 mole of the compound.

Hence n = 4

Answer 2

Answer:

4

Explanation:

Let the molar mass of compound be "M"

Hence: M×6/100 =24

M =400g/mol

=Given, M =n×10²

⇒M=4

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